Perrota grew up in an extremely abusive household, which the BAU identifies as the root of his antisocial personality.

The case turns into a "turf war" between the BAU and the FBI’s Organized Crime Unit. Unlike typical serial killers who seek emotional or sexual release, Perrota is a professional hitman for the mob, which Gideon describes as a rare "true psychopath".

This episode is famous among fans for a rare glimpse into .