The investigation zeroes in on a prime suspect who proves adept at manipulating a volatile situation to his advantage. ...

The FBI officially sends the BSU to Atlanta to investigate the missing and murdered children. Wendy second-guesses her interview methods. ...

Bill's devastating family situation spills over during his interview with Holden's holy-grail subject: Charlie Manson. Wendy's new romance heats up. ...

Bill gets drawn into a horrifying crime that hits close to home. Holden receives an intriguing offer while in Atlanta to interview a pair of killers. ...

To glean insight into the elusive BTK killer, Bill and Holden interview Son of Sam, who makes a startling admission. ...

Amid sweeping changes at the BSU, Holden deals with severe repercussions from his close encounter with Ed Kemper. ...

Bill and Holden consult with Dr Wendy Carr to begin classifying their subjects and they receive surprising news. ...