First broadcast 13th September 1976.br br Some years earlier Billy Medhurst was one of a gang of thieves, one of whom shot and crippled police sergeant Eddie Jackson before escaping to Spain.br br John Thaw - Reganbr Dennis Waterman - Carterbr Garfield Morgan - Haskinsbr Anthony Heaton - Billy Medhurstbr Maureen Sweeney - Mrs.