It involves a lamp—that's all you need to know. For those reading on, serial killer Egifius Schiffer died in what appears to be an autoerotic sex act while serving life in a German prison, Oxygen reports. Schiffer, 62, was found last week hooked up to a lamp cable at Bochum prison in Germany's North Rhine-Westphalia. "He removed a cable from his bedside table lamp, then wound it around his nipples and his penis and stuck the end in a power socket," a prison spokeswoman tells the Times of London. A post-mortem found that Schiffer died from heart failure due to excessive electricity in his chest.
Known as the "Aachen Strangler," Schiffer initially got away with murdering five female hitchhikers in the 1980s. But the former insurance salesman was picked up in 2007 for stealing scrap metal, and agreed to give up a DNA sample that linked him to the murders, per the Sun. A self-proclaimed sadomasochist, Schiffer then admitted his guilt because he was apparently excited about going to prison—but later changed his mind and claimed innocence. Police say they doubt anyone killed Schiffer, and his lawyer says he wasn't at all suicidal. (Read more serial killer stories.)