airdate: April 7, 2010
story by: Chris Mundy and Edward Allen Benero
teleplay by: Chris Mundy
directed by: Richard Shepard

• Keeping with the theme of duality in the episode, there are two turning points in the investigation. The first one concerns the finding of skin under the victim’s fingernails which leads the team to construct a theory that the Unsub was once a prisoner who is now controlling his victims to fight against each other in death matches. The second turning point involved the discovery of Jane’s diary which on further inquiry was forced upon her by a therapist in the Tenderloin district. The Unsub and his family obtained counselling at the same centre and this information greatly narrows the suspect pool and the team is able to successfully identify the Unsub.

• John Vincent Bell who lost his custody of his daughter due to mental health issues. When social services came for the girl he beat the worker to death which resulted in imprisonment. However, while in prison his daughter dies in a car crash and since his release he re-enacts a complicated and deadly delusion to cope with his loss.

• When Cooper defies Strauss and shares a smirk with Hotch.
  
• When Ben tells his daughter that despite the fact that he seems to be a bit ridiculous, all he's doing is looking out for her well-being, and that he wants her to know before he dies that he loves her.

• Jane’s brave attempt to save her father, by lying to the unsub. A gutsy move that not most adults would not even attempt to make.
• When Mick, set up as a sniper, takes down the UnSub before he has a chance to kill Prentiss.
• The team party and toast at the end

• Cooper (to Hotch concerning why he isn’t in the office): I have a medical condition. I am allergic to bureaucracy
• Mick (while on surveillance duty on the roof): So what are you wearing? Emily: A gun (with heavy sarcasm)

• Cooper (to Strauss before hanging up the phone): ..and with all possible respect. I have work to do

• This episode serves as the backdoor pilot for the potential Criminal Minds spinoff.
• The father played by veteran TV actor Jason Wiles was the UnSub from season 2 episode 4 'Psychodrama'
  

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