What Is a Wood Shredder?

The killings of the Kangzhou wood shredder occurred on November 19, 1986, when Pan-American Airlines' "airline" Haili, who lived in Xinzhen, Kangzhou, suddenly disappeared. After receiving the report, the police, after some investigation, suspected that she had been killed by her affair husband, Richard Krafts. But they could not find any evidence to prove that Hailey was dead. The investigation was deadlocked. In desperation, they thought of Dr. Li Changyu.

Killer Murder in Kangzhou

Right!

Kangzhou Murder Case, the case occurred on November 19, 1986, living in

Li Changyu surveyed the Kraffz couple's bedroom. With superhuman observation ability, Li Changyu found a small strip of extremely inconspicuous marks on the side of the double mattress. After inspection, he confirmed that it was the bloodstains that had been scrubbed, and the blood type was the same as that of Haili, the missing person.

After the circumstances of the case were reported, a snowplow driver called the police station and said that he had seen a middle-aged man using A wood chipper shattered the branches, which he felt strange at the time. After hearing about it, Li Changyu suggested that detectives investigate the woodbreaker. Detectives soon discovered that Richard had rented a wood chipper on November 19.

Li Changyu organized the police to conduct a comprehensive and careful survey of the river bank and to melt the snow on the bank slope little by little. In the melting snow, they found pieces of wood, hair, fibers, bone fragments, human tissue fragments, and a small piece of nails with nail polish. Block teeth.

At the same time, divers from the police station dived into the water and searched, and found a disassembled chainsaw on the river bed. After looking at the parts of the chain saw, Li Changyu pointed out that although the chain saw was dismantled into many parts, it was not damaged. Only the serial number on the saw was scraped off. It can be seen that this chain saw was not discarded because it was useless, but was thrown away because someone wanted to hide something. Li Changyu took the chainsaw parts back to the laboratory and extracted a few trace substances from above, including hair, fibers, human tissues and bloodstains. There is no doubt that this chain saw is an important clue to solve the case. So, the next question is: who is the owner of this chainsaw?

They did a technical job where the chainsaw was scratched off the number. The chain saw number was: 5921616. With this number, the police found the owner of the chainsaw-Richard Krafts! This has taken the investigation of this case a step forward.

Next, Dr. Li and his technicians carried out a series of tests on various trace substances found: They took a hair sample from the hair brush that Haili usually used, and then performed it with 2662 hairs extracted from the riverside scene. After comparison, the conclusion is that the two have the same color, thickness, curvature, and cross-sectional shape, and they have been dyed with the same potion.

They conducted a comprehensive material composition analysis of the fibers found on the scene and confirmed that they were a kind of fibers in light blue pajamas. The little nanny Molly of the Kraffz family proved that Hailey's favorite pajamas were light blue .

They examined the human tissue and bloodstains extracted at the scene and confirmed that they were the same blood type as Hailey.

They also found the nail polish that Haili usually used, compared it with the nail polish found on the spot, and determined that it was the same product.

They also asked Haley's dentist to identify the small piece of metal and the small tooth found on the scene. The dentist confirmed that those things belonged to Haley based on his records of repairing Haley's teeth.

Richard was arrested and formally charged with murder. Newspapers and TV news across the United States have reported the appalling "woodchopper killings." But Richard still firmly denied that he had killed his wife. He even said to the prosecutor in a challenging tone: "You say I killed Hayley, you prove it!"

In order to produce evidence that convinced the jury, Li Changyu arranged two more investigation trials.

First, they found a policewoman who was similar in size to Hailey, and simulated the situation in which Hailey fell to the ground after being hit by her head in the same environment as the scene. The fake blood leeches on the policewoman's head were on the side of the mattress, leaving the same marks as the blood on the scene.

Second, they brought the wood chipper from the machinery rental company and found a frozen dead pig. They mixed dead pigs in a tree branch and shoved them into a wood chipper. Then they compared pieces of pork bones and pork with human fragments extracted from the scene, and found that both were similar in shape and size. The process of both trials was recorded so that they could be shown to the judges and jurors in court. Dr. Li believes that for those jurors, this intuitive representation is often more convincing than the language of experts. During the entire court investigation, Li Changyu's court presentation with performance was undoubtedly the most brilliant scene. Although the English he speaks is not standard or has a Chinese accent, his rigorous statement, alert answer, confident expression, funny language, and humorous actions effectively make up for his lack of language. . The jurors listened attentively to his explanation.

After the court's investigation and debate, the jury unanimously convicted the accused, Richard Kraftz, of murder. Subsequently, the judge announced a sentence of 50 years in prison for Chad. As a result, the case became the first murder in the state of Kangzhou to be detected without a body. He said there was no magic "crystal ball" in his hand. After the corpse fragmentation was over, many reporters went to interview Li Changyu. Li Changyu said modestly: "A lot of people think that I have a crystal ball in my hands, and what magic can be seen to happen in the past. In fact, I know neither magic nor crystal ball. We rely on careful observation to solve the case. , Serious thinking, hard work. Please do not forget that our on-site investigation in this case took a full five days, and we have more than 5,000 various inspections and appraisals! "

After that, Li Changyu participated in the investigation and trial of many major cases. Because of his excellent performance, his reputation in the United States has also grown. Over the years, he has participated in more than 6,000 criminal cases of all sizes in 50 states in the United States and 17 countries around the world. And he often lectures around the United States and many countries around the world, and has written about 200 academic papers and 18 academic books. Make him a world-class "star."

On July 21, 1997, the Connecticut State Assembly passed a bill approving the issuance of $ 1.3 billion in bonds for the establishment of the "Dr. Henry C. Lee Court Science Academy and its Museum." "The name of such an institution in Dr. Lee's name is a blessing for New Haven and the entire region," said Martin Rooney, chairman of the Senate Finance Tax and Bonds Committee.