Ok I am so definitely behind on checking in with the BAU, but that's water under the bridge. Onward and upward. November 2nd's episode "Epilogue" finds the BAU called to California on the trail of a serial killer who kills young men and dumps their bodies in nearby lakes. Hotch and the team discover from the autopsies that the UNSUB is drowning and reviving the victims repeatedly, the reason for this we find out later. This episode was written by Rick Dunkle (pictured below with Thomas Gibson) who also wrote one of my favorite episodes "Slave of Duty". I thought the flashbacks really gave you a window into what factors into the making of a serial killer.