Chapter 688 Heilbronn Ghost

"What?" Danny turned the steering wheel and parked the car on the side of the road. Parked on the street in front was a van painted with a purple and yellow LOGO. A young white woman wearing a FedEx uniform and a single ponytail was walking Loading and unloading express parcels next to the car.

"We'll talk about it later. Let's catch this Vazquez first." Jack opened the car door and got out of the car, and directly drew his pistol.

Both of them were wearing body armor, but one was printed with NYPD and the other with FBI. This slightly weird combination caused a commotion among the people around them as soon as they got out of the car.

The young woman who was bending down to pack up the express delivery realized something was wrong and looked back. When their eyes met, she jumped up like an agile antelope and got directly into the traffic.

"Oh, come on, I hate chases." As soon as Danny turned around, he found that Jack was already on the other side of the road. He sighed in resignation, put away his pistol and followed.

When he finally got through the crowded traffic and reached the other side of the road, he could no longer see the backs of the two of them. Fortunately, the shouts of passers-by pointed him in the direction, and he successfully tracked them to a fast food restaurant not far away. Kitchen.

"Shoot! Kill me!" At this time, Marcia Vazquez was confronting Jack with a meat cleaver, looking crazy, "Shoot! Or I will kill you!"

In sharp contrast, Jack's voice across from her seemed a little too calm, "Put down the knife, you have enough troubles already, there is no need to add a felony charge of assaulting a police officer."

Danny quietly touched the woman's back, and when he was about to do something, he was surprised to see Jack put away his gun.

"What are you going to do?" Danny didn't make a sound, and silently asked Jack with his teeth bared, not knowing what he wanted to do.

"Come on, you have two choices, kill me and run away from the front, or turn around and face my partner's gun." Jack waved and challenged this fierce woman.

"Fakeyu!" The woman rushed towards Jack brandishing a meat cleaver.

The sharp blade cut through the air, and stopped in mid-air the next second. The woman's wrist was firmly held by Jack, and it dropped weakly with a slight shake, and the knife fell to the ground with a clang.

"Be careful!" Danny warned, because the woman did not give up her resistance. She raised her strong right leg sharply and pressed her knee against Jack's vital part.

"Bang!" A dull impact sounded. Jack's left leg came first, and the knees of the two hit each other firmly. Jack's expression did not change, and the woman's face twitched in pain.

"Huha!" Jack put his right hand under the woman's armpit and turned around suddenly. He threw her over his shoulder with a big windmill, as light as a pillow.

"You are under arrest, Marcia Vazquez"

Danny stepped forward and cuffed her, pulled the stunned woman up from the ground, and whispered to Jack, "Is this what you said about never holding back when facing a serial killer?"

"Trust me, Danny, she's not a serial killer." Jack also whispered, but didn't explain much.

——

"What do you mean she's not the serial killer we're looking for?" Several people in Mike Taylor's office at the CSI laboratory looked at each other.

There was no joy in discovering the truth on Jack's face. On the contrary, he was even a little irritated. "Remember the 'Ghost of Heilbronn' case that happened in Germany and France? I think the CSI laboratory is in big trouble this time."

"The Ghost of Heilbronn" is a famous unsolved case in the last century. In the 1990s, a mysterious serial killer appeared in Germany. He committed crimes for 16 years, during which he committed more than 40 murders.

DNA technology was first used in criminal cases in the United Kingdom in 1985, and then quickly developed to European countries and became a tool for solving crimes. Related technologies in various application fields are also emerging in endlessly.

In 1993, a murder occurred in a small town in southwestern Germany. A 62-year-old old lady was strangled to death with a wire. The police used the latest forensic technology, namely DNA fingerprinting technology, to extract an unknown female from a teacup at the scene. of DNA.

However, the fingerprint information database had not yet been established at that time, and the police had never been able to find the corresponding suspect. They could only determine that the murderer was a woman through DNA, so the case continued to drag on without progress.

Until 2001, another murder of an antique dealer occurred in Freiburg, Germany. The cause of death was also strangled, and the same DNA appeared at the scene.

Seven months later, the same DNA was collected from a needle used for injecting drugs at the scene of another murder. In 2007, two German anti-narcotics police officers were attacked, one dead and the other injured. The mysterious DNA appeared again in the bullet casings at the scene. superior.

In order to hunt down this mysterious female killer, the German police spent 18 million US dollars and investigated more than 800 female suspects. However, she seemed to be a ghost, and her whereabouts became increasingly erratic.

Even as the investigation deepened, more cases were revealed. The mysterious female killer's whereabouts spread all over Europe. She appeared in France, Austria and other countries. The total number of cases reached more than 40, causing a sensation throughout Europe.

It was not until 2009 that this mysterious female killer was finally arrested, because "she" did not exist at all. After further joint investigation by the French and German police, it was discovered that in the past 16 years, the police of these European countries had been at the crime scene. The swabs used to extract DNA were contaminated.

At that time, the cotton swabs used by the police in Germany, France, and Austria all came from the same supplier. A cotton swab factory in Austria. Due to the irregular disinfection process of the factory, the cotton swab heads were contaminated with the DNA of the same female employee.

No one knew how the German police felt after discovering the truth at that time, but after hearing Jack's speculation, everyone in the CSI laboratory was extremely shattered.

Jack's statement that the CSI laboratory is in big trouble is not without purpose, because the contamination of DNA evidence may very well mean that a series of recent cases that rely on DNA evidence to convict may be implicated. What this means is self-evident.

Some serious cases that were finally convicted may be overturned and the prosecutors need to look for new evidence. If everything does not go well, some extremely vicious criminals may be acquitted.

Everyone, including Danny, realized the seriousness of the problem, "Fuck, I need to contact my sister Eileen as soon as possible. At the family gathering last week, she was still complaining to me about the serial killer called Dick Reed. How a rapist and murderer frightened the only witness out of court.”

"Remember to contact your father, Director Regan, by the way. The NYPD also needs to formulate response measures as soon as possible." Jack said, grabbing a box of cotton swabs on the table, and turned around to go out with Mike Taylor.

"Where are you going?" Stella Ponasela asked quickly.

"Brooklyn, go verify Jack's guess." Mike Taylor replied solemnly.