John Verea

The teams search for what they believe to be two killers who torture and murder young women and then send DVD recordings of their crimes to the victims' mothers.

Michael interrogates Simon in order to gain more information on the cipher he found. Elsewhere, an old friend of Sam serving jailtime asks him for help, as he fears his life might be in danger.

An officer is suspected of using steroids; a detective admits to an affair with a drug-addicted snitch after the woman is found dead.