New york has a wealthy family. There is a loving couple, daughter Fanny and son Erica. My son has a quirk and likes to chew his fingernails. My sister was born with a pair of love, and my two children have grown up. But the relationship between the two children is very poor, because the eldest son Erica always likes to put some dirty things and bugs in her sister's schoolbag and bed, and also likes to find someone to bully her. For some reason, even her parents didn't notice the relationship between the two children. Finally, one day, the weak sister couldn't help it anymore, and a plan to poison her brother was brewing.

On this day, my sister invited my brother to a coffee shop for coffee, but not long after, Erica died of poisoning.

Detective X came to the scene quickly after receiving the alarm. After some investigation, no poison was found in coffee and dessert. Now Detective Rowling wants to know how the killer poisoned it.

The second question:

An entertainment star was found dead in his bedroom at night because he couldn't stand the media attack. Detective X rushed to the scene after receiving the alarm. Judging from the scene, the deceased committed suicide.

The deceased died in bed, shot in the head, covered with a quilt and covered with his hands. There is a half-opened diary beside the bed, which reads: "I can't stand their malicious attacks."

According to years of experience in handling cases, Detective X thinks: "She was murdered, and this is the second scene created by the murderer." Where did you see the flaw?

(10 subtopic)

The first question:

One morning, Jack and John went to visit Mrs. Dickinson, who lives in a suburban villa. Usually they ring the doorbell when they want to go in, but today the door is unlocked. Jack and John pushed open the door and found Mrs. Dickinson's body in the dining room on the first floor. It seems that he has been killed for more than ten days.

She was suddenly attacked while eating, and a sharp knife went through her chest and was killed on the spot. The murderer then ransacked the whole villa.

Jack and John sat sadly on the front steps of the villa, and the newspapers sent filled the whole steps, and the subscribers would never read the newspapers again. Under the steps of the villa, there are two bottles of expired milk, which were also ordered by Mrs. Kimson. Clever Jack saw it, and it took him five seconds to know who the murderer was. Do you know that?/You know what? Do you know that?/You know what?

The second question:

77. Xiaojun, Xiaoqing and, four people are good friends. One day Xiaoqing died, and the police suspected Jun He was a suspect, so they summoned three people respectively.

Policeman: "Hello, I'm a policeman from the local police station. I regret to inform you that your good friend was murdered last night. We hope you can come to the police station to cooperate with our investigation. "

77: "What? Dead? It's terrible. Fortunately, I don't have the habit of going out at night. "

Jun: "Dead? Unfortunately, I have to find the murderer to pay my friend. "

Jojo: "What? What's the matter, how can Xiaoqing die, incredible? "

The police immediately knew who the murderer was after they hung up the phone. Who is the murderer and why?

(20 sub-questions)

The first question:

Master and apprentice are going out by boat. The apprentice waited for a long time on the boat. When the master didn't come, let the boatman wait. He went to call his master. He went to the master's door and shouted, Jenny, is the master at home? Later, I found out that Master was dead. After this sentence, it is concluded that he is the murderer. Why?

The second question:

One sultry summer, Inspector Song had no intention of walking to the door of his good friend Professor Daguang. He rang the doorbell for a long time, but no one answered the door. He saw the window wide open and realized that something might have happened, so he knocked the door open with his body. He walked into the living room and found the bedroom door closed, but the keyhole seemed to be locked from the inside. He climbed in through the window and found Professor Daguang dead in bed. Everything in the room seems to indicate that he committed suicide. There is still a key in the keyhole. After being extracted by Inspector Song, it was found that the fingerprints of thumb and forefinger were the same as those of Professor Daguang's right hand, which further proved Inspector Song's inference that Professor Daguang committed suicide after locking the door.

But after careful scrutiny, the careful inspector Song still saw that this was a fake suicide. Then where did he see the flaw?

(5 sub-themes)

1. Three lighted candles are placed on the paper box. A gust of wind blew out one candle, and the other two continued to burn. How many candles will be left in the end?

2. Detective X, the most famous detective in new york, walked leisurely in a street in the dark night. The street lamp has stopped. As soon as he got to the door of the museum, he suddenly heard someone calling for help, so he ran in the direction of the sound. I found an unidentified woman lying on the steps in front of the museum, with an old dagger on her back, only half inserted, and a young man standing next to her.

When Detective X asked him what had happened, the young man replied, "I had just reached the second step when I heard a scream. Then this woman rolled down the steps, and I was scared. She must have angered the devil in the museum before she was killed. Because it was too dark, I didn't see anything under the steps. "

After listening to his words, the detective not only didn't believe him, but thought he was probably the murderer. Do you know what this is about?

(10 subtopic)

The first question:

In three rooms separated by paper sliding doors, a light bulb is hung in the center of each room. The resident in the middle room is suspected to be a suspect in an event. Whether he was alone at the moment when the clock struck 10 that night became the key to solve the mystery of the event.

A said she was at home alone. Neighbors on both sides also proved that there was a figure on the paper door at exactly 10. After listening to these words, police officer M looked at A sternly and said, "You are really lying." How did the police reach this conclusion?

The second question:

The police in Karlsruhe, Germany, found a few drops of nosebleeds left by the murderer at the scene of a murder case. After testing, the blood type of this nosebleed is AB. As a result of reconnaissance, a middle-aged driver named Hans was found to be suspected of committing a crime. However, when the police went to arrest him, it was too late. Hans has gone abroad, so it is impossible to find out his blood type.

So the police turned to investigate Hans' parents' blood type. His father's blood type is O and his mother's blood type is AB.

Excuse me: Is Hans the murderer?

(20 sub-questions)

The first question:

Three people went to a hotel and stayed in three rooms. The price of each room is $65,438+00, so they pay the boss $30. The next day, the boss thought that $25 was only enough for three rooms, so he asked my brother to return $5 to three guests. I didn't expect my brother to be greedy. He only paid back 1 dollar and secretly took 2 dollars himself. But at the beginning, the three of them paid 30 dollars, so 1 dollar?

The second question:

It takes 1 hour to burn an uneven rope from beginning to end. Now there are two ropes of the same material. How to time fifteen minutes by burning rope?

(5 sub-themes)

1 and1= 5,2 =15,3 = 215,4 = 2145, so 5=?

(10 subtopic)

The first question:

Divide the picture into three parts with the same area with five matches.

The second question:

There are two blind people. They all bought two pairs of black socks and two pairs of white socks. The fabric and size of eight pairs of socks are the same, and each pair of socks is connected with trademark paper. Two blind people accidentally mixed up eight pairs of socks. How can each of them get back two pairs of black socks and two pairs of white socks?

(20 sub-questions)

The first question:

A scavenger found a body lying on his back. The police found two bullets in the victim's body: one in the lower abdomen and one in the forehead. Both bullets hit the key. There were no very useful clues left at the scene, so the body was transported back for autopsy. Strangely, two bullets belonging to different guns were taken out of the body. This means that someone killed the victim with two different guns or two different people. Which bullet hit the victim first?

The second question:

Eric, the president of K Company, has just returned from a business trip in Berlin. As soon as he opened the room door with the key, he saw his wife dead in the bedroom at home.

Soon, according to the degree of decay, the police arrived at the scene to confirm that the death time of the deceased was about 2 to 3 days. The body had just begun to rot, and there were strange folds and indentations in the corpse mound. The doors and windows in the house were closed and there were no signs of forced entry. The most surprising thing is that there is no air conditioning in this beautifully decorated house, and the only refrigerator in the house is too small to accommodate only half a person.

The host has sufficient alibi, because he stayed in Germany for a whole week, and many people proved his alibi.

The hostess is a typical housewife. She has hardly had any history with anyone except going to the health club, and according to the staff of the club, the hostess has not been there for two weeks.

Question: It is known that the woman was killed by the man, so how was she killed by the man?

(5 sub-themes)

1, when four MINUS one equals five?

(10 subtopic)

The first question:

There is a man who lives on the tenth floor. Every day he takes the elevator to the lobby and then leaves. At night, he will take the elevator upstairs, and if there is someone in the elevator-or it rains that day, he will sit directly on his own floor. Otherwise he will sit on the seventh floor, and then he will walk to his apartment on the third floor. Can you explain why?

The second question:

A killer (that is, me) broke into the mansion! I covered my pistol and killed the only man in the house! In order to get rid of suspicion, I created the illusion of suicide for the deceased! First, I wiped the fingerprints off the pistol, and then I put the pistol in the hands of the deceased. Then I put on gloves and wrote a suicide note on the victim's typewriter, leaving no fingerprints! Everything is ready! But I still made three fatal mistakes! Excuse me, where are these three flaws (just answer two correctly)

(20 sub-questions)

The first question:

One day, a rich man was found dead at home. All his money was looted and everything in the safe was taken away.

What is even more frightening is that the body lying in the room was stabbed five times in the chest, which is fatal, but what is surprising is that the murderer actually cut the belly of the deceased and cut it open with a knife, which is extremely cruel.

Then the police contacted the deceased's ex-wife, who didn't seem surprised by his death. "I said before that people like him will definitely die of natural causes!" His life and death have nothing to do with me. I'll go first. "As can be seen from her impatient expression, their previous relationship was not good.

According to acquaintances, the deceased had little contact with people before his death, and even the huge villa lived alone, just asking hourly workers to clean it at home regularly. He is very stingy. It is said that his ex-wife's father died because he didn't want to use his own money to treat him.

Try to reason: who is the murderer? Is it an acquaintance or an ordinary robber? Why dismember the body?

The second question:

A spy was caught in the warehouse on the first floor ... His hands and feet were tied ... He was injected with anesthetic ... A bomb was placed beside him for two hours ... Before he lost consciousness, the spy thought he would die ... But when he woke up, he found that the bomb was going to explode in one minute ... He was lucky and quickly untied his anklets ... He found one next to the locked door. ... he escaped from the warehouse at lightning speed ... but when he escaped from the window, he found himself cheated ... Finally, the spy's death was considered suicide ... What was it?