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.

Isobel gets entangled with victims of an unethical doctor in her expose of an in-vitro clinic; Kennedy sends Dennis to Halifax to find a baby girl cloned by a bizarre cult group.

Dennis investigates a vigilante incident; Megan loses her unerring objectivity while profiling a brain surgeon who can't save himself from brain cancer.