Ronnie Barker produces one of his finest performances as Norman Stanley Fletcher, a career criminal, who takes his naÎve cellmate Lennie Godber (Richard Beckinsale) under his wing during his first spell in prison. … Written by Dick Clement and Ian La Frenais, Fletcher's constant run-ins with stern prison warder Mr Mackay (Fulton Mackay) made it one of the most successful comedies of the 1970s.