Serial Killers

Being outside with nature is where he felt most comfortable. That’s why Gary Michael Hilton targeted avid hikers in peaceful, wooded areas. But while he chose his victims carefully, he didn't give the same type of thought to getting away with his crimes.If you’d like to take action on the climate or learn more about the topics covered in “Dark Green: Earth Crimes and Conspiracies,” visit www.spotify.com/darkgreenresources. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Out in nature, alone with only the trees for company, Gary Michael Hilton found a peace that always eluded him in day-to-day life. Numerous run-ins with landlords, spouses, and law enforcement complicated things in the city. And in October of 2007, he went from petty thief to murderer.If you’d like to take action on the climate or learn more about the topics covered in “Dark Green: Earth Crimes and Conspiracies,” visit www.spotify.com/darkgreenresources. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Philadelphia’s first Earth Day celebration made him a minor celebrity. When he met 25-year-old Holly Maddux, he knew he had to be with her. They lived together for a few years before Holly started to see the real Ira Einhorn. Just days after she told others she was leaving him, she disappeared.If you’d like to take action on the climate or learn more about the topics covered in “Dark Green: Earth Crimes and Conspiracies,” visit www.spotify.com/darkgreenresources.  Learn more about your ad choices. Visit podcastchoices.com/adchoices

If you were in Philadelphia during the 1960s and interested in the counterculture movement, you probably saw Ira Einhorn storm the stage at the city’s very first Earth Day. While peace and love were the mainstays of his belief system, Ira didn't always practice what he preached. If you’d like to take action on the climate or learn more about the topics covered in “Dark Green: Earth Crimes and Conspiracies,” visit www.spotify.com/darkgreenresources. Learn more about your ad choices. Visit podcastchoices.com/adchoices

By early July 1988, he had already tortured, mutilated, and killed two women. Police were stumped until they sent in one of their own undercover. And while his wife and children slept, 30-year-old Steven Brian Pennell took the bait. Learn more about your ad choices. Visit podcastchoices.com/adchoices

With fear of confrontation and anxiety about disappointing loved ones, Steven Brian Pennell pent up his rage. He'd often drive along Highway 40 in Delaware to clear his head. After killing his first hitchhiker, he realized there was only one way to satisfy his desires. Learn more about your ad choices. Visit podcastchoices.com/adchoices

While she was a pediatric nurse at Bexar County Hospital, Genene Jones' colleagues were alarmed by how many babies were dying during her shift. When evidence was presented to the hospital's medical director, an investigation was launched. But during that time, Jones stayed on the job, and her patients were still in danger. Learn more about your ad choices. Visit podcastchoices.com/adchoices

She had experienced her share of tragedy, losing her father and a brother to cancer. That's why Genene Jones went into nursing. She wanted to make a difference. And while she was very devoted to her job in the pediatric ICU, it seemed far more babies were dying during Genene's shifts than any other nurse's. Learn more about your ad choices. Visit podcastchoices.com/adchoices

His family says that a traumatic brain injury when he was 13 changed Peter Kudzinowski's behavior. But alcohol always made him aggressive. When he was 25 years old, he was found intoxicated on the street in Detroit and put in the drunk tank. He hinted at committing horrible crimes — and the police wanted to know more.  Learn more about your ad choices. Visit podcastchoices.com/adchoices

Imagine knowing who a serial killer is for years but not having enough evidence to prove it. This is what happened to police in Sydney, Australia. During the 1980s, Leonard Warwick was angry when he lost custody of his daughter after his divorce, so he targeted employees of the family court system. And the only way to stop the violence was for his ex-wife to surrender custody.Today, Vanessa joins Carter Roy for a special crossover episode with Cold Cases. Learn more about your ad choices. Visit podcastchoices.com/adchoices