To Hell and Back, Part 2

To Hell and Back, part 2 is the second of the two episode Season Four finale of Criminal Minds. The episode ends in a cliffhanger.

Summary
The BAU continues its search for a serial killer who has forced the team into Canada to catch him and has placed a team member's life in danger.

Notable Guest Stars

 * Garret Dillahunt - Mason Turner
 * Paul Rae - Lucas Turner
 * Sharif Atkins - William Hightower