Boyd and the team find that the murdered young man presumed to be Irish was really working for the English under a "false flag."

Mel finds out that the suspected kidnapper she accidentally shot is Jason's adoptive father and child abuse advocate Dr. Roper is found murdered.

A probation officer is murdered in a halfway house, but it is made to look like a suicide.

A serial killer, possibly a man and woman working together, are responsible for a series of kinky, sex-related murders.

Two women with psychiatric problems are driven to murder and a third to suicide by a shadowy religious figure called "The Shepherd."

A fourth schizophrenic young woman falls under the spell of the shadowy religious figure known as "The Shepherd," who exploits her paranoia and manipulates her toward murdering psychiatrist Matt Carney, brother of her doctor, David Carney.