Bill Clark, a veteran homicide detective, and Gilles Tetreault, a survivor of a brutal attack by Mark Twitchell, share harrowing insights into a chilling murder case. They explore how Twitchell's obsession with filmmaking blurred the lines between fiction and reality, culminating in the shocking disappearance of John Altinger. Tetreault recounts his terrifying encounter with Twitchell, while Clark discusses the relentless police investigation that uncovered disturbing evidence in Twitchell's garage. Together, they delve into the emotional aftermath for the victims' families.