Paul McCarthy-Boyington

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.

Grissom fears the work of a serial killer when an apparent suicide victim is found in a bathtub with a tape recorder, much like a previous murder that was staged to look like a suicide. Elsewhere, Nick and Warren investigate a car crash which may have been no accident.

Sydney and Nadia learn that Sophia, the head of the orphanage that cared for Nadia as a child, was badly beaten, and when Sloane learns why she was beaten, he fears for Nadia's safety.

When a reality TV star is murdered, the CSIs investigate the show's cast, the obsessed fans, and the stars' hidden pasts.

When Ben lands in a 1950s psychiatric institution, he must engineer a daring escape for a young woman unjustly committed by her husband; the team is shocked to learn the identity of a mole in Quantum headquarters.