Directed by Andrew Piddington

Alienated from his wife and children and obsessed with his father (Alan Bates), a war time hero now the mute inmate of a mental hospital in Lisbon, John Prentis (Lambert Wilson) becomes increasingly unsettled by the enigmatic Dr. Quinn (Kenneth Haigh) who runs the institution.
 
Gradually, Prentis suspects that his father’s breakdown and Quinn’s menacing behavior are somehow connected and becomes convinced that the link is to be found in his father’s recently published memoirs.