Gary De Silva suspects his wife, Sarah, is cheating on him, and turns to Vincent Gallagher for help. Vincent and Beth follow Sarah to a club and see her with another man. Vincent calls him to break the news, sending Gary into a frenzy.

Edward Harper asks Vincent to investigate the death of his son, who was fatally knifed in a nightclub. The prime suspect is Ian’s friend, James O’Connor, son of the club owner, but the police are unable to touch him due to a lack of evidence. The investigating officer on the case is his ex-partner's new love, DCI David Driscoll.

Sally Mortimer calls in Vincent when she finds thousands of pounds stashed in her husband William’s wardrobe. John follows William to Madrid. Another client, Keith Evans, is concerned that his teenage son, Joel, is acting out of character and mixing with the wrong crowd, and Vincent asks Robert to keep an eye on him.