In the new season of 📺 Catching Killers, the detectives who captured the BTK Killer and other notoriously brutal murderers recount the emotional toll of their investigations and the brave actions they had to take. S2 is streaming now on Netflix. | Netflix

In the mid-to-late 1970s, Bundy, Gacy and BTK begin claiming victims, while Dahmer and the Green River Killer inch ever closer to realizing their grim fantasies during this moment from Invisible Monsters. | Crime & Investigation on A&E