Smithy is held hostage at gunpoint by Pete Larson, who attacks his wife after discovering their illicit affair. After forcing him into the boot of his car, Larson takes Smithy to a disused warehouse, where he confronts him about the affair. Meanwhile, Larson decides to put a contract out on his wife's life, forcing Valentine and Hollis to go in search of a dangerous hitman who has disguised himself as a hospital doctor. When a cleaner disturbs Larson in the act, Smithy manages to make good his escape and raise the alarm. However, once in custody, Larson turns the tables and claims that his wife was responsible for the death of Vince Garrison, and that Smithy planted the gun to frame him. (thetvdb.com)