Known as the "Lipstick Killer" for the haunting message he left at one of his crime scenes, teenage serial killer William Heirens struck fear into the city of Chicago during the 1940s. Despite a troubled childhood, no one suspected Heirens of being a ruthless murderer, making his case even more chilling. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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After one of Ray and Faye Copelands' intended victims managed to escape their clutches, the police began to investigate this seemingly-harmless elderly couple. But they quickly discovered that Ray and Faye were far more dangerous than they seemed. Not only had the Copelands committed murder -- they were serial killers. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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After a lifetime of petty crimes, Ray Copeland turned to murder in the 1980s as part of a scheme to defraud cattle auctions. Although his wife Faye might not have participated in the violence herself, she seemed to be in on the scheme. But the Copelands weren't sophisticated killers -- and their sloppiness threatened to reveal their true nature as a pair of elderly serial killers. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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Herbert Mullin's struggles with delusions made him an especially dangerous serial killer. Unable to overcome the voices in his head, he preyed on people all around Santa Cruz, California in the early 1970s. But because there was so much violent crime in the area, Herb's killing spree went undetected. And by the time anyone realized what was going on, thirteen people had lost their lives. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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Serial killer Herbert Mullin suffered from the delusion that a terrible disaster was coming -- and the only way to avert it was to sacrifice as many people as he could. During the 1970s, he terrorized the region around Santa Cruz, California, murdering innocent people. But soon, his killing spree turned more personal -- and even more dangerous. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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As the end of the year approaches, we're revisiting the best episodes of 2024 from Crime House. On Murder: True Crime Stories, Carter Roy examined the case of the Tylenol Murders. In the fall of 1982, seven people in Chicago were killed by poisoned Tylenol pills. In the first of three episodes, learn how the murders unfolded, the early steps investigators took... and how the killer eluded them. Murder: True Crime Stories is a Crime House Original. For more, follow us on Tiktok and Instagram @crimehouse. To hear the conclusion of this gripping true crime story, check out Murder: True Crime Stories on Apple or Spotify.

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During the 1400s, Gilles de Rais terrorized his lands, kidnapping and murdering children as he pleased. But when he stopped being useful to his lords, this medieval serial killer's crimes were finally exposed -- but the question is, would anyone care enough to stop him from murdering again? Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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In medieval France, Gilles de Rais made his name as Joan of Arc's greatest ally. But now, we know him as one of history's most terrifying serial killers. From the depths of his castle, Gilles assaulted and murdered innocent children. And it seemed like nobody could stop him. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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For years, "Angel of Death" serial killer Elizabeth Wettlaufer flew under the radar. Because she made her murders look like death from natural causes, nobody suspected she was killing her elderly nursing patients. But a lifetime of shame and guilt was weighing on Elizabeth. And by 2016, that dam was about to burst. Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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Growing up in a strict religious household, Elizabeth Wettlaufer had to repress her sexual identity. The years of lies took a toll on her, and she turned to substance abuse to cope. As a nurse, Elizabeth had easy access to drugs -- and she spiraled out of control. Eventually, the dam burst and Elizabeth took out her anger on the patients she was trying to save... and became a serial killer known as "the Angel of Death." Mind of a Serial Killer is a Crime House Original. Follow us on Instagram and TikTok @crimehouse for more true crime content.

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