Sing Sing is a 1983 Italian comedy film directed by Sergio Corbucci. It stars Adriano Celentano, Enrico Montesano and the British actress, Vanessa Redgrave. It was released in Italy on 15 October 1983.
A Rome mechanic becomes convinced that he is the son of the Queen of the United Kingdom (Redgrave).
And an inspector has to protect a film dubber pursued by a psychopath.