Host Donnie Wahlberg looks at some of the most frightening killers in history, retracing their backgrounds, psychology, motives, and how they were eventually caught. Tune into new episodes of #VeryScaryPeople Sundays at 9/8c on ID. | Investigation Discovery

Brand new episodes of "Very Scary People" hosted by Donnie Wahlberg are coming to HLN! Don't miss the season 2 premiere: Sunday, July 12 at 9 p.m. ET! | HLN

SNEAK PEEK - Take a look at a few tense seconds from Sunday's all new episode of Very Scary People hosted by Donnie Wahlberg and see if you can guess who the very scary person being featured is. | HLN