The team hunts for a copycat serial killer who is recreating the techniques used by famous killers of the past.
Malcolm and Stevie's families invite disaster by going on holiday together on a houseboat. While Steve's parents are caught in a fight, Malcolm is stuck with Hal fishing. Inspired by Eric, Francis decides to leave school and move away.
Jack and his team search for a teenage boy, Ethan Sawyer, after he disappears from his home.