The discovery of a body of a teenage suicide leaves a bitter taste in Ackland's mouth, and finding herself being drawn into a seedy world of pornography, drugs and prostitution, Ackland considers leaving Sun Hill for good after the situation is made by worse by Galloway, who gives her a hard time over calling him out of bed on a Sunday morning. When it is discovered that the girl was three months pregnant at the time of her death, Galloway goes all out to make sure the investigation doesn't drag the girl's name through the mud, and her parents are protected from finding out what their daughter was really like.

Meadows and Burnside want to go in force to the Tankeray estate to root out the criminal element, but Brownlow is committed to a softer approach. P.C. Smollett proves more effective than C.I.D. at catching a dangerous mugger.