Willi Hartung, a German Police Sergeant is shot dead by a gunman during a failed robbery attempt - just one in a sequence of similar crimes. Meanwhile, Jo and Roper investigate the apparent suicide of Corporal Luke Gemmill the driver for Lieutenant Colonel Cosgrove CO of the Wessex Regiment. Forensics prove that Gemmill was murdered - but why was his body found in the luxury car hired from a German ex-soccer star, Kramer. When Sergeant-Major Burns learns that British guns were used in both incidents, he initiates an investigation.

Burns et Howard enquêtent sur la mort d'un policier allemand abattu par une arme militaire lors du braquage d'une banque. De leur côté, Jo et Roper enquêtent sur le suicide du soldat Luke Gemmill, chauffeur du lieutenant-colonel John Cosgrove. Il se pourrait que la mort de ce dernier soit en fait un meurtre