Southern Television

Ian McShane stars as Peter Curtis, who has just been released from prison after serving four years for manslaughter. His victim's mysterious last words lead him on a frantic quest for answers in the tidal estuaries of the West of England, where he finds himself on a collision course with other parties who are as eager to solve the mystery as he is, and are seemingly even prepared to kill to find the answer.

After shore-leave in Lisbon for the crew of HMS Diana, Master-at-Arms 'Toby' Toberman makes an official complaint to the ship's Captain about the behaviour of an officer he saw in a casino. Following the ship's 'Sod's Opera' party, Toby is reported missing from the deck - presumed lost overboard. Was it an accident or suicide - or was he given the proverbial push?