4x08: Egocentric Killers
4x07: Deceptive Killers
4x06: Fantasy Killers
4x05: Sexual Deviants
4x04: Stone Cold Killers
4x03: Rage Killers
4x02: Control Killers
4x01: Manipulators
3x10: In Pursuit of Evil
3x09: Face to Face
3x08: The Killer's Brain
3x06: Redemption
3x04: Vampires/Cannibals
3x02: Super Delusional
2x10: Cult Leaders
2x08: Masterminds
2x07: Attention Seekers
2x06: Spree Killers