Series 4

September 7, 1988

Taggart uncovers a sordid case of extortion, forgery and murder when he investigates the suspicious death of a member of a church youth club

September 28, 1988

Taggart and Jardine investigate when someone starts bumping off Glasgow's loan sharks.

December 30, 1988

The body of Rowena Bain is discovered in a wood. The forensic evidence suggests suicide, but Taggart is suspicious. The victim's sister thinks that Rowena's husband, Maurice, killed her. The case against Maurice grows when it is discovered that his first wife also disappeared in mysterious circumstances.