The Phantom of Heilbronn: The Most Dangerous Woman Nobody Could Find

0:00 [MUSIC] For over a decade, European law enforcement hunted a woman they called the Phantom of Heilbron, a suspected serial killer whose DNA appeared in more than 40 crime scenes across Germany, Austria, and France. Her profile connected murders, burglaries, drug offenses, and eventually the killing of a police officer in broad daylight. Investigators swobbed over 3,000 women, logged 16,000 overtime hours, and posted rewards of up to 300,000 euros. And you are not going to believe what they actually found. [MUSIC] Welcome to 10-minute murder, and for 15 years, law enforcement agencies across three countries believed they were hunting one of the most prolific and elusive criminals in modern European history.

1:01 She was connected to over 40 crime scenes across Germany, Austria, and France, tied to murders, burglaries, drug offenses, armed robberies, and eventually the execution style killing of a police officer in broad daylight. Her genetic fingerprint kept turning up at scenes that shared nothing in common with each other, and places hundreds of miles apart, attached to crimes that formed no coherent pattern whatsoever. They called her the Phantom of Heilbron, or the Woman Without a Face, depending on which newspaper you picked up that week. Either way, she was one of the most wanted people on the continent, and search for her would consume 16,000 overtime hours, swob more than 3,000 women, and ultimately exposed one of the most consequential investigation failures in modern German history. She did not exist. And I know at this point that doesn't make any sense to you, but trust me, it's going to make a lot more sense later on. The story traces back to May of 1993 in a small German town called Eider Oberstein, mostly known for its gemstone trade and a famous church built directly into the side of a cliff face, a quiet, unremarkable place. A 62-year-old church warden and pensioner named Lisa Lotch Schellenger was found strangled in her apartment. The murder weapon was the thin wire used to hold together a bouquet of flowers sitting on her table. No fingerprints were

2:32 recovered, no witness came forward, no suspects materialized. The only trace of anything was DNA recovered from the rim of her teacup, and in 1993 the technology to make that evidence useful was still years away from being standard practice. The case went cold and the file went into a box. Eight years later, in March of 2001, an antique stealer named Joseph Walsenbach was found murdered in his Fryberg home, strangled with Garden Twine. When forensic teams processed the scene, a DNA staple from the kitchen drawer matched the decades-old profile from Schellenger's eight years ago teacup, one unidentified woman connected to two strangulation deaths, nearly 300 kilometers apart, eight years apart, and nothing obviously linking the victims to each other. German investigators had a serious, strange problem, and it was about to get much stranger. Over the following years, this DNA profile kept reappearing at scenes and seemed more random each time.

3:36 In October of 2001, a seven-year-old boy near Gerylstein stepped on a discarded heroin syringe. His parents took to the hospital for testing, and the phantoms DNA was on the needle. A burglary in Boudinheim yielded her profile on a half-even cookie, a gang that robbed Vietnamese gemstone traders in France left behind a replica pistol, and her DNA was on that too. A violent dispute in warms between two brothers put her genetic profile on one of the bullets. Crime scenes kept multiplying across Austria. Criminal psychologist assembled a working theory. She was probably homeless, probably addicted to heroin, likely of Eastern European origin, drifting between countries and surviving on opportunistic crime. Austrian investigators ran mitochondrial DNA analysis suggesting Eastern European ancestry, which seemed to point everyone in the same direction. German law at the time actually prohibited police from using DNA to determine ethnicity, which meant German investigators were building a detailed profile of someone who appeared to leave their genetic material everywhere she went, and her face absolutely nowhere.

4:50 And here's where the case genuinely starts to feel a little unhinged. The portrait emerging of Europe's most dangerous female criminal was being assembled from a half-even cookie, a heroin needle, and a replica pistol at a gemstone robbery in France. These could be the items that you might find if you thoroughly cleaned out somebody who's like a hoarder in their vehicle. The DNA kept matching, though, and in forensics, a match is a match. Michelle Kiesawetter was 22 years old. She had grown up in the small, Thurnegan village of Oberwaisbach, developed a childhood dream of becoming a police officer and been specifically inspired by her uncle who worked in state security. She joined the Baden-Wertenberg Force in 2003, and by 2007 she had built a life in the southwest, staying active in her local biaithalon and fair clubs. On April 25, 2007, she was covering someone else's shift. She was not originally scheduled to work that day. She and her 24-year-old partner, Martin Arnold, were on patrol in Heilbron. And around two in the afternoon, they parked next to a large open public place where festival crews were already setting up their spring fair to take a lunch break. Two gutmin approached from behind the patrol car and fired into both officers' heads. Kiesawetter was killed immediately. Arnold was shot, fell into a coma for three weeks and survived, with no memory of the attack at all. The shooters took both service weapons and

6:21 both sets of handcuffs, then disappeared into the afternoon. When forensic teams processed the patrol car, the phantoms DNA was on the rear seats and the center console. The investigation transformed within hours. A reward for 300,000 euros was announced. More than 3,000 women were swabbed across Germany for their DNA. 16,000 overtime hours were now being devoted to hunting a killer of police officers. Multiple witnesses at the park that afternoon described seeing men running from the scene. The DNA said female. Rather than pausing to ask whether the evidence itself might be the problem, investigators constructed theories around the contradiction. Maybe she was the organizer directing the men. Maybe she appeared male to witnesses while leaving biologically female DNA at the scene. German reporting later described this as investigators performing what they called "cognitive backflips". 3,000 women were swabbed while witness accounts were being managed around every theory, rather than the theory being questioned because of the witnesses and those overtime hours kept accumulating. The case came apart in early 2009 because of something that was simply not physically possible. French investigators were trying to identify the burned remains of a male asylum seeker who had gone missing in 2002. They pulled DNA from his original immigration fingerprints and ran it through the database. It matched the phantom. A dead man's fingerprints were returning the genetic

7:54 profile of Europe's most wanted female serial killer. A spokesperson for the public prosecutor's office stated what was now obvious. This was impossible unless the testing itself was wrong. Second test using a completely different brand of cotton swab produced no trace of the phantom at all. The contaminated swabs were traced to a Bavarian manufacturer called Griner Bio-1. The swabs had been labeled sterile, which investigators had reasonably interpreted as DNA-free. Those two designations are not the same thing and that gap turned out to be the entire case. The sterilization process done with gamma radiation or ethylene oxide eliminates bacteria and viruses but leaves human DNA completely intact. The swabs had been handled and packaged by Eastern European women at the end of the production line and their skin cells had transferred onto every single one.

8:52 The woman without a face was a 71 year old Polish factory worker who had no idea any of this was happening. While all of this was going on, two actual killers were moving freely across Germany. UAE Mundlose and UA Boneheart were the operational core of a neo-Nazi terror cell called the National Socialist Underground, the NSU. Between 2000 and 2006, they murdered eight Turkish citizens and one Greek citizen, nearly all small business owners using a silenced pistol and striking a broad daylight. The investigation into those nine murders was a failure with a specific character. Police focused almost entirely on the victim's own communities, theorizing organized crime connections, drug deaths and personal disputes. Grieving family members were interrogated for years as potential suspects. In one particularly memorable investigative maneuver, police set up an undercover fake kabob stall to draw out whatever criminal they had already decided must be operating inside immigrant networks. In 2006, victims families organized public demonstrations under the slogan "No 10th Victim", pleading openly with authorities to investigate a right-wing, extremist motive. Nobody acted on it. Less than a year later, Michelle Kiswetter was killed.

10:14 The NSU's end came on November 4, 2011, when a bank robbery fell apart and the two men were cornered by police. They took their own lives by setting their motorhome on fire. Inside the wreckage, investigators found both service weapons stolen at the crime scene years earlier. The NSU trial ran from 2013 to 2018, the longest criminal proceeding imposed toward German history, drawing more than 600 witnesses. It also surfaced evidence that Germany's domestic intelligence agency, the BFV, had informants within NSU connections and maintained it had no prior knowledge of the cell's activities. Records documenting seven informants were deleted by a BFV employee in the days immediately before the group's existence became public. Martin Arnold, the officer who survived the attack, carries a 70% permanent disability rating. He lives with hearing loss, balance problems, and no memory of the afternoon that killed his partner. He has spoken publicly about his frustration that early witness descriptions placing men at the scene were minimized by investigators already committed to the phantom profile. In 2016, the operational organization for standardization published ISO 18385, requiring forensic supply manufacturers to maintain employee DNA exclusion databases. That standard did not exist before this case. It exists now because of the phantom of Heilbron. One woman's skin cells shed at the end of a production line in Bavaria without her

11:47 knowledge became the anchor that locked an entire investigation in place while real killers operated in plain sight for a decade. The forensic community still studies this case says a warning about what happens when evidence stops being a tool for finding the truth and starts being used to protect a conclusion that investigators are no longer willing to question. Thanks for listening to 10 Minute Murder, bingeable true crime stories. My name is Joe. Hello, I'm the host, and here is an email. Subject, a quick thank you. Hi, Joe. No big question here.

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