(1) Archaeological Heritage

Ayue's father is a very capable old engineer and an amateur archaeologist. He loves his only daughter very much and often gives her some strange questions to guess. No, just before the old engineer died, he gave his daughter another problem. The old engineer called his daughter to the bedside, holding a key with an ancient coin about 2.5 cm in diameter and a square hole in the middle. He said to his daughter, "Dad is going with your mother, and there is no chance to give you any more problems. This is the last question I will give you. I left you a lot of property on this key. You have to hold this key to find it. " Then I gave the key to Ah Yue. Soon, the old engineer passed away. Ah Yue took care of her father's affairs and searched the house with this key, but she didn't find a large fortune as her father said. She thought her father had played a joke on her before he died, so she threw the key on the bed and sat there in a daze. Suddenly, she seemed to understand something and immediately ran to her father's book search office to look up the encyclopedia dictionary. She finally found a large fortune left by her father. Do you know where she found it?

(2) fruit knife

One night, Shi Lany went to the kitchen to pick a ripe apple from the box and took it to the living room to eat, but he forgot to bring a fruit knife, so he asked his wife Jingjiang to help him with it. "I want some, too." Jingjiang cut the apple on the plate in half, gave it to her husband and ate the other half himself. But when Setogawa finished eating the apple, he immediately began to suffer? Soon he stopped breathing and died. He was poisoned by cyanic acid. Scared to death, Jingjiang immediately called the police. The police listened to her statement, and he didn't know why, and he was at a loss. Of course, the most likely suspect in this poisoning case is Jingjiang himself, but the apple was chosen by the deceased himself. Jingjiang ate the other half himself. The detective thought for a long time and suddenly thought of something. So he hurried to the kitchen to check the knife for cutting apples, and then told his subordinates with bright eyes, "Look, isn't this the key to poisoning?" What's the point of what he said?

(3) alibi

A public security officer was ordered to ask a middle-aged man if he was at the scene of the crime around 9: 00 last night. "I'm from the public security bureau. This is my business card. " Public security personnel introduce themselves first. The middle-aged man took the business card and read it for a long time, which was very hard. Then he turned his head and said, "I was reading at 8 o'clock last night 10, and I was alone in my room." "Did you watch it with a flashlight or a candle?" "I don't have flashlights and candles at home." "However, it rained all night last night, and the nearby apartments were cut off from 8: 00 to 10." "But I'm reading a book, if you don't believe me ..." The middle-aged man was about to get his book, and the public security personnel immediately understood. He knew that it was really impossible for the middle-aged man to appear at the crime scene at 9 o'clock last night. Why do public security personnel make such judgments?

(4) Intelligent arrest of robbers

In the twenty years of Zhenguan in Tang Dynasty, a businessman was robbed in the dense forest on a snowy winter night. Early the next morning, the businessman told the government about the robbery, but because of the heavy snow on the snowy night, he couldn't tell the whereabouts of the robber. All he knew was that the robber was young, dressed in black, and riding a black horse with four hooves through the snow. After some analysis, Yang Fan, the county magistrate, thought that the crime scene was only ten miles away from the city, and nine times out of ten it was done by the city people, but he was afraid to bring so many stolen goods back to the city, so he had a brainwave and made a plan. He told his men to immediately knock gongs along the street to inform the people of the whole city that someone was killed at 10 outside the city, and described the detailed characteristics, hoping that the family members of the deceased would go to the government to claim the body, and indeed there would be one soon. Excuse me, what tricks did the county magistrate use to catch the robbers quickly?

(5) Bite each other

In the fourteenth year of Chongzhen in Ming Dynasty, Taiyuan Prefecture in Shanxi Province captured a group of robbers. These robbers are organized and disciplined. They have formed an offensive and defensive alliance and exhausted all torture, but they still can't get any useful clues. The closing date stipulated by the court is approaching, and the state officials are anxious. At this time, a counselor made a suggestion, and so on ... So the robbers were first brought to trial separately, and then they were brought from the prison to the small prison opposite the prison. After each arraignment, wine and meat are sent to a small prison, but the prison is still meager. In the trial of bandits in prison, it is implied that some of them have exposed the crimes of prisoners. Sure enough, there was a crack inside the robber. So, I quickly found the clue and solved the case. Do you know what the counselor gave?

(6) twin brothers commit crimes

A young man killed someone and ran away. After Interpol arrived, according to the information provided by witnesses, the murderer was found in a hotel, but the young man said that he had been here all the time, and he had never left the hotel after watching TV after dinner. The manager of the hotel and the people around him also confirmed this. Witnesses unanimously confirmed that from the appearance and clothes, the young man was the perpetrator.

Then, the criminal police went to test the fingerprints left by the murderer, which were not the young man's.

Lao Li, the captain of Interpol, suddenly understood, so he asked his assistant to check the young man's household registration book. Sure enough, according to this clue, the murderer was successfully caught, and it was really not this young man.

What did Lao Li think of?

(7) Two fathers

When he was in Song Shenzong, Zhang Dageng, a rich man in Jincheng, died in a certain year. His son Zhang Bainian had just finished the funeral, and a strange old man claimed to be Zhang Bainian's biological father to recognize his son. It is said that when Zhang/Kloc-0 was 0/00 years old, he was raised because of his poor family, and he brought an crooked matchmaker to testify. Zhang Bai, 25, denied this, so he filed a lawsuit.

The lawsuit hit the censor Hao Cheng. Cheng Hao asked the old man to produce evidence, and the old man took out a piece of paper, which read: On a certain day, a crooked matchmaker gave Zhang Baisui to the old man in Zhang Changgeng. Hao Cheng asked Zhang Bainian:

"How old are you this year?"

A: "36 years old."

He asked again, "How old was your father when he was lucky?"

A: "76 years old."

Cheng Hao asked the matchmaker again, "How old are you this year? How old did you start as a matchmaker? "

A: "I am 58 years old for nothing, and I have been a matchmaker for 28 years at the age of 30."

Hao Cheng immediately saw through the tricks of the matchmaker and the old man.

What flaw did Hao Cheng find?

(8) Have your own sleeves

My occupation is stealing, and my goal tonight is a clothing store in Chaoyang Street, with a mailbox in front of it.

There is still money hidden in such an old safe. Don't blame me, it's all hundred-dollar bills, and 30 thousand cash is mine. What luck tonight! Thank god for his care.

When I sneaked out of the clothing store and just walked to the corner of this street, I suddenly heard a voice "Hey, wait a minute!" " ""it's broken. The patrolling police saw it. " I thought to myself. I was taken to the police station without arguing. Before I was questioned, the police received a report that 30 thousand yuan was stolen from the clothing store in Chaoyang Street. Then, the police searched my whole body, but naturally I couldn't find anything, because I had no money, so I had to release me on the spot.

I know the police will send someone to follow me all the time, but I have decided to go home and have a good sleep. In a few days, God will naturally send me the money. The only thing I have to do is to stay at home. I don't have a partner. Do you know how I will get that 30 thousand yuan?

(9) Simple detection of homicide cases

A young entrepreneur died suddenly in his garden, was shot in the head by a pistol and died on the spot. There was no murder weapon left next to the body.

Did he kill or commit suicide?

The police are looking around for trace evidence to solve the case. If it was disguised as his suicide, then the pistol was hidden as evidence. But if there's no pistol next to the body, it must be homicide. Then finding the pistol seems to be the key to the problem. But finding a pistol is not easy.

Speaking of which, a very famous policeman stood up and said, "Keep the change. I have a very simple way to prove whether the deceased committed suicide or homicide. "

Excuse me: "Do you know what this method is?"

(10) Wu Bai money

Wang Lin, the magistrate of Bianjing in the Northern Song Dynasty, found evidence and was good at deliberation, which made him famous in Bianjing area.

One day, a farmer complained that he borrowed 800 yuan from his neighbor and wrote a written statement. Later, when it was due, he sent 500 yuan first, because the relationship was close, and he didn't ask his neighbors to issue a certificate. However, when the balance was paid back a few days later, the neighbor refused to admit that he had paid 500 yuan before.

Because there was no documentary evidence when paying back the money, the case was difficult to solve, and Wang Lin was lost in thought. After a while, he had an idea and immediately called the farmer's neighbor to class and asked the farmer to avoid it.

At first, the neighbors were innocent and not afraid. Wang Lin ordered him to be shackled and interrogated severely. Wang Lin said, "We just cracked a theft case, and your partner gave you 500 yuan. Not long ago, this was not true! "

The farmer's neighbors complained loudly. He said: "Not long ago, someone did give me 500 yuan, but my neighbor owed me money." Wang Lin: "There was documentary evidence at that time." Neighbor: "Because of the close relationship, there was no documentary evidence at that time."

So, Wang Lin skillfully solved a case.

Do you know what is going on?

(1 1) Body-burning conspiracy

There was a monk in the middle of the state of Qin. He and his followers agreed to burn their bodies regularly and collected a lot of money. On that day, a fire was lit and people crowded to see it. The patrolman heard that he also came to see it according to the suggestion. After watching it for a while, he suddenly ordered to stop the ignition. Shi Yu went to ask the monk if he would like to. After asking three or four times, he refused. The suggestion was so surprising that people went to the woodshed to see it. The monk frowned and secretly shed tears. So the monk put him on the woodpile and put on his frock, only to find that he had taken the hemp Covenant, so he could not hear the sound and could not speak. At this time, I understood everything and knew that this was a scam.

What is the monk's trick?

(12) Realistic illusion of drowning

There is an ancient pond in the suburb 0/5 km from the city/kloc-. Because it is stagnant water, there are many algae and plankton in the pond.

One morning, people found a man's body in the ancient pool and immediately called the police.

After the police dissected the body, they found that there were many algae and plankton in the ancient pool of the deceased's lungs and stomach. So it is very likely that the deceased accidentally fell into the ancient pool and drowned. His time of death was around 9 o'clock last night.

However, according to the masses, a man in a city is suspected of murder. The police investigated the man. But according to his female neighbor, the man had been playing chess with her husband at her house from 8: 00 to 1 1 last night. He didn't go back to see the children at home until around 9 o'clock, and after about ten minutes, he came to her house again.

In just over ten minutes, it is impossible to transport the body to the ancient pond 15 km away, not to mention that the deceased did drown by drinking the water from the ancient pond.

In fact, the murderer is indeed this person, so how did he create the illusion of objectivity and truth?

(13) impossible task

007 is one of the most famous spies. He often sneaked into other countries disguised as fear information, sometimes for years. This time I went to country D for a short time, more than half a year.

When I got home, the first thing I did was go straight to the basement.

In the secret safe in the basement, there are password books and funds for espionage.

A thick layer of dust fell on the floor and table, and the old electric stove was the same as it was six months ago. I checked the inside of the safe and found nothing unusual. He dusted off the table and immediately began to decipher the code he got in country D.

It's extremely cold in the cement-poured basement. He pressed the switch of the electric furnace, and as soon as the current was switched on, the bare nickel-chromium wire immediately turned red.

007 was about to light a cigarette when he suddenly felt something was wrong and immediately twitched his nose slightly like the smell of a hound catching prey.

"Someone must have come in recently, and it's not just petty theft. People were so careful that they didn't even leave footprints in the dust on the ground. They must be enemy spies. Probably took the password book out of the safe and photographed it with a camera.

At that time, because the electric stove was cold, before I left, I used a sprayer to blow the dust on the ground and the place left on the table, and everything was restored to its original state before I fled. But he only ignored one thing-he forgot to blow the dust, which was his failure. "

007 looked at the invisible opponent, a man talking to himself.

So, on what basis did 007 detect the entry of enemy spies?

(14) inside thief

1one night in June, 1998, five high-grade recording cores were stolen from the production line of workshop 9 of Yangming wireless power plant, with a value of more than 7000 yuan. Half a month later, another tape recorder and video recorder parts were stolen from the production line of this workshop, worth more than 3000 yuan.

The factory security section learned in the investigation that these three thefts were discovered after the workers left the workshop after work, and they were all discovered when the team arranged production the next morning. After three investigations, it was confirmed that the doors, windows and locks of the workshop were in good condition, and there were no traces such as turning the window and prying the door. There are three people on duty in the workshop after work in the evening. After visiting and investigating the personnel on duty in these three nights, the personnel on duty did not reflect and provide suspicious information. According to the above situation, the security guard determined that all three thefts were committed by insiders, but how did so many things come out of the factory? Who is the biggest suspect?

(15) Bodies in the annex building

One night, the police received a report from a hotel that a man jumped from the roof at around 9 o'clock and died on the spot.

The police surveyed the scene and found a board on the roof. One side of the board is placed on the iron block, and the other side is inclined to the edge of the building, which also shows an outward landslide. A plastic pipe connected to the faucet continues to flow out. At the same time, the police received the autopsy materials sent by the forensic doctor. The deceased skull fracture, but it wasn't caused by a fall from the upstairs. There are obvious signs of being hit by a blunt object such as a stick. In other words, this is a murder case. Besides, the victim was dead before he went downstairs. After careful investigation, the police arrested the major suspect A, but A had been playing chess at a friend's house from 8: 00 to 11: 00 that night and never left. That is to say, A was not there when the body fell from the upstairs. However, in fact, the murderer is one.

So, how on earth did A make an alibi?

(16) chewing gum

Chewing gum has many benefits. It can clean oral odor, chew regularly and exercise facial and oral muscles. Actually, gum has many other functions. Let me tell you something:

One day, a man who looked like an upstart came to a jewelry store. He was rude and arrogant, ordering the clerk to ask for this and that in a commanding tone, chewing gum, and the clerk kept eating and drinking.

"Oh, what's the matter?"

The diamond in the man's hand accidentally fell to the ground.

The clerk quickly picked it up, but it was a pure fake.

"Sir, I'm very sorry, but did you replace the diamond? May I search you? "

Up to this point, the clerk was aggressive and tough, but he searched the man's whole body and found no diamonds.

"More like it, your fake diamonds, to find my fault?

Although the clerk firmly believed that this man had replaced him, he swallowed his words and apologized and gave him some money to dispose of. But how did you put the diamond back?

(17) Where did the money go?

It was noon and the post office was sparsely populated. In the middle of the post office hall is a long table with benches on both sides, where people can sit and write envelopes and money orders. Lao Wang is filling out a money order from 500 yuan. After filling it out, he stood up and touched his pocket, only to find that the cash was gone!

Lao Wang remembered that a young man with a flat head had just come to borrow his pen. Because the dip pen provided by the post office didn't work well, I stopped and let him use it first. He wrote a brown paper envelope, returned the pen, said "thank you" and left. Lao Wang hurried to find it, but fortunately the young man was leaving after writing the letter.

Lao Wang stopped him and asked him if he had stolen his own money. The young man denied it and took the initiative to open his pocket to Lao Wang. There was no money lost by Lao Wang in it.

The security guard of the post office heard their dispute, came to help find it, and asked the staff of the ordinary class to prove that no one had been near Lao Wang except the young man with a flat head, and he had not contacted anyone after writing the letter.

So, did the young man with a flat head steal the money? If he stole it, where did the money go?

(18) Mo Ling

In ancient times, there was a man named Yang Cheng, a small businessman. All his 40 taels of silver were stolen when he was out. In a rage, he reported the innkeeper and all the guests to the government.

After hearing Yang Cheng's story, Sean, the county magistrate, called the arresting officer to investigate. But I searched the shop and found nothing. The police took the shopkeeper and a dozen guests to the county government and the court, and no one admitted stealing Yang Cheng's money.

Sean, the county magistrate, said, "Now, I will take you to a big temple in the north of the city, where there is a magic clock. When a thief touches it with his hand, it will buzz. In recent cases, thieves were found with Mo Ling. " So the shopkeepers and shopkeepers were taken into the dark temple.

Touching the clock has already started. A dozen people listened to the county magistrate's password and came into the room one by one with the big clock in order to touch it, but it never rang.

"Turn your back on the police officer, behind your hands!" The magistrate ordered. Then he looked at everyone's hands one by one and found the thief at once.

What's going on here?

(19) defect

1998 10 The public security organ of a city is tracking down a criminal gang that steals and sells smuggled cultural relics. Unexpectedly, Wang, one of the backbone leaders of this gang, was electrocuted in a warehouse that was about to be scrapped 20 kilometers away from the city.

When the investigator arrived at the scene, he found the deceased lying on the mud floor of a broken warehouse (because there was a thunderstorm just at night). The face of the deceased had no obvious features, and a white silk dress was covered with mud. Wear a pair of new leather shoes on your feet, and the sole pattern is clear and recognizable; He was on his back, palm up, and the back of his hand touched a high-voltage wire that was hanging down because of disrepair; There is a scar on his head, and there is blood on the stone next to the scar ... Investigator Xiao Liu said: "From the scene, Wang's head hit the stone because of the slippery road surface, and the back of his hand was electrocuted."

The chief of the criminal investigation department, who has many years of experience in detection, said nothing. He looked at the scene carefully and then said, "This is homicide! Not an accidental death. "

What flaw did he see?

(20) Two suspects

One morning, a female body was found on the stern deck of a luxury passenger ship sailing around the world to the Pacific Ocean. The deceased was a fashion designer named Junko Tanaka who was stabbed to death with a dagger.

Because the crime happened in the vast Pacific Ocean, the murderer must still be on board. Even if he escapes by lifeboat, there is little hope of survival, so ...

In fact, there were two people on board who had motive to kill her.

The victim's nephew Ichiro Tanaka is the heir to his property. He is heavily in debt because of gambling, and he is unable to repay it.

The victim's secretary, He Yan, Shaanxi Province, was fired when corruption was exposed during the voyage.

According to the above situation, please judge who is the murderer. If you can solve this mystery, you are a detective.

(2 1) Treasure corpse wilderness

This is a killing in the wilderness.

The dead man was found tied to a dead tree, and he was already dead. He was gagged and tied by hadron three times around his neck.

It was this rope that strangled the dead man. The estimated time of death was around noon, when there was a heavy rain, which lasted for about an hour.

The next day, although the murderer was caught, it was strange that this person had a definite alibi from noon that day until the body was found, and there was a witness to prove that the criminal was drinking in the pub on the street. So by what means did the murderer kill the victim? And no partner.

(22) The key to the treasure chest

In the last week of the Northern Dynasties, a businessman went to Beijing to do business with 20 Jin of gold. He lives in a family house. Whenever he goes out, he always locks the gold in a box and takes the key with him. Soon, the gold in the box disappeared, but the lock was not damaged at all. The businessman thought that the landlord had stolen his gold, so he sued the county government. The county magistrate tortured him, but the landlord had no choice but to confess.

Liu Qing was a driver in Yongzhou at that time. When he heard about it, he was very suspicious. He called the businessman and asked, "Where do you often put your keys?" A: "I always carry it with me." He asked again, "when the gold was stolen, was the box broken?" Is the lock broken? "

A: "None of them are broken." So Liu Qing concluded that it was someone else who stole the gold.

Please analyze Liu Qing's thoughts.

(23) Ghost constitutional murder

"300 Mysteries of the Republic of China" records: Xiamen Huang made a fortune in business, with 302,000 silver, building a big house and luxurious decoration. Later, this mansion was often haunted. At night, the wildfire fluttered in the hall. A group of evil spirits, dressed in ancient red robes, wearing ancient shamao and holding swords, paraded through the city about ten feet high and came to his house to kill pigs, sheep and stew chicken, which made the Huang family restless.

One night at the end of the lunar calendar, Lin Sheng was robbed of 654.38+10,000 yuan, and his whole family was killed. Lin Sheng's brother Lang Sheng suspected that it was a ghost pretending to be a robber. He looked at the new house carefully and found a place to rotate on the roof. After a push, he found a big hole. Inquired about the carpenter and learned that neighbor Sun Dakui bought the institution he placed with money. Sun absconded with his family after committing the crime. Lang Sheng searched everywhere, trying to catch the murderer.

One day, there was a villagers' competition in a village. Clear voice saw a dozen people in Lin Sheng's house dressed in ancient costumes, wearing top hats and standing on stilts. They looked like ghosts. So he used his quick wits to take advantage of the chaos and went around among the dozen people, hiding in the crowd and shouting, "Will Sun Dakui invite you to Lin Sheng's house to play with a living ghost tonight?" Sure enough, a dozen people were frightened, peeping around and trying to escape. At this time, a group of people invited by Lang Sheng swarmed, caught the bandits and escorted them to the county government. How did Lang Sheng think of shouting those words?

(24) Perjury

In the dispatch court of the county court, the judge is trying a civil case.

Among them, the plaintiff sued: "The defendant borrowed him 10,000 yuan and has not paid it back yet. Seeing that the statute of limitations is about to pass, the defendant must be returned immediately. " The plaintiff produced an IOU dated1February 29th, 993. The judge took the iou, pondered it briefly, and said to the plaintiff, "Did the defendant lend you any money? I hope you will tell me honestly, or you will bear legal responsibility. "

The plaintiff still argued irrationally. Finally, the judge gave his reasons, and the plaintiff had to bow his head and admit his mistake.

Excuse me, why is this?

(25) Tracking treasures in posts

The World Stamp Exhibition held at the National Museum in London, England, caused a sensation all over the country, and thousands of people went to enjoy these priceless treasures. Unexpectedly, the most precious "black penny" was stolen. So the police dispatched a large number of people to investigate.

A suspect left the scene and fled to a room in a nearby building, and the police arrived immediately.

"Hand over the stolen stamps quickly," said the policeman, shaking his pistol.

"Hum, search whatever you want." The criminal brazenly replied.

So the police handcuffed the criminal and searched him thoroughly, but no stamps were found. I took off my clothes, shoes and socks and searched again, but I still couldn't find them.

There is only a steel desk and a floor fan in this room, and besides, it is simply an empty room. The floor fans are turning, not to mention the desk drawers. Even the floor and patio have been searched carefully, but I still can't find them.

"Hey, where are you hiding?"

No matter what the police asked, the criminal just laughed and didn't answer.

Because stamps are expensive, you can't throw them away. They must be hiding somewhere around them. As a precautionary measure, the police removed the rotating electric fan and checked the bottom of the base for many years, but still no stamps were found.

Just when the police were at a loss, Mr. Fei, a private detective, came to help at the request of the victim's stamp collectors. Mr. Fei took a look at the scene.

He found out where the stamps were at once.

So, where are the stamps hidden?