When five women die in a mysterious blaze, Dennis goes after the head of a Russian sex slave ring; Isobel and Kamal meet a seriously disfigured boy set to receive a face transplant.

Isobel is duped by the cunning machinations of a beautiful young girl; a story about an enigmatic movie star with a dark secret deepens the rift between Dennis and Kennedy.

An inmate's account of a brutal gang rape drives Dennis' story on prison conditions in a dramatic new direction; Isobel gets hooked on slot machines while investigating the suicide of an addicted gambler.