"She boarded a submarine to interview an eccentric inventor. She never came back." What followed was one of the most shocking and gruesome investigations in modern true crime history — a case that exposed a killer hiding in plain sight.
In this harrowing true crime episode, we investigate the 2017 murder of Kim Wall, a 30-year-old Swedish freelance journalist who wrote for The New York Times, The Guardian, and VICE [citation:1][citation:5]. On August 10, 2017, she boarded the UC3 Nautilus, a homemade submarine built by Danish inventor Peter Madsen, off the coast of Copenhagen [citation:1][citation:4]. That was the last time she was seen alive.
When Wall failed to return, her boyfriend reported her missing. Madsen was rescued hours later as his submarine sank [citation:1][citation:4]. His story shifted repeatedly: first claiming he dropped her off on an island, then that she died accidentally when a heavy hatch fell on her head, then that carbon monoxide poisoning killed her while he was on deck [citation:2][citation:5]. Each version collapsed under forensic evidence.
Her torso washed ashore on August 21st—stabbed 14 times in and around her genitals [citation:1][citation:3]. In the following months, her head, arms, legs, and clothes were found in plastic bags weighed down with metal objects in Køge Bay, thanks in part to a university research vessel that calculated historical current data [citation:3][citation:7]. The autopsy revealed no skull fractures (ruling out the hatch story) and no signs of carbon monoxide poisoning [citation:2][citation:3]. She also had marks on her wrists and ankles showing she had been restrained [citation:3].
Madsen admitted to dismembering her body but denied murder, claiming he did it only to fit her through the submarine's narrow hatch [citation:3][citation:5]. A court-ordered psychiatric evaluation described him as "intelligent, emotionally impaired with a severe lack of empathy, anger and guilt... and with psychopathic tendencies" [citation:3][citation:6]. Investigators found violent videos on his computer depicting the torture, beheading, and murder of women [citation:3][citation:4]. His own bloodied nose? It had Wall's blood on it [citation:3].
In April 2018, Madsen was convicted of murder, sexual assault, and abuse of a corpse, sentenced to life in prison [citation:1][citation:3]. Wall's family—her parents Ingrid and Joachim—worked closely with lead investigator Jens Møller Jensen, even bringing in Swedish cadaver dogs to locate body parts underwater, a technique now used internationally [citation:7][citation:8]. This episode is a tribute to a fearless journalist, a meticulous investigation, and the family that refused to let her story be forgotten. Listener discretion absolutely required.
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