After another prostitute is slain, Fitz comes to believe that David Harvey's wife Maggie is the killer, in spite of vehement protesting by the police and his brother, Father Michael.

Bill Nash smiles at Stuart Grady, and, in those few seconds, changes the course of their lives and inadvertently turns them both to murder. Meanwhile, on the domestic front, Judith finally rebels.

Fitz is pitched against Grady and Nash, whose relationship is now spinning dangerously out of control.

Fitz privately advises a patient who seems to be having problems with her husband. Fitz's advice, for which he charges her £50, leads her to conclude that she should leave him.