15: Wannabe Filmmaker or Real-Life Dexter? | Mark Twitchell

In October 2008, John Altinger disappeared from his Edmonton condo, leaving friends confused by mysterious emails about a new love and a sudden trip to Costa Rica. But behind the digital trail and polite explanations, a darker story was unfolding. One tied to a charming, ambitious local filmmaker with a fascination for serial killers and a dangerous obsession with blending fiction and reality. As investigators peeled back the layers of his life, strange clues, disturbing writings, and a chilling sense of premeditation began to surface, hinting at a mind capable of more than anyone could imagine… .If you’re new here, don’t forget to follow the show for weekly deep dives into the darkest true crime cases!