Sandra and the team unearth the 10-year-old case of a poet from Belfast whose burnt body was found in the scrapyard of a known gangster. Gerry becomes convinced the victim's links with the criminal fraternity led to his demise, but Brian has a different theory - perhaps the secret of his murder lies in his verse? James Murray (Primeval), Tanya Franks (EastEnders' Rainie, Karen off Pulling) and Bronagh Gallagher (The Commitments) guest star, with Amanda Redman, Dennis Waterman and Alun Armstrong.