The Third Secret (1964)
"The Story of a Man Searching for a Killer Who Might Be Himself!"

Title: The Third Secret
Original Title: The Third Secret
Release Date: 1964-02-02
Status: Released
Rating: 6.1/10 (from 27 votes)
Language: EN
Genres: Mystery, Thriller, Drama
Production Companies: Hubris Productions
A prominent London psychologist seems to have taken his own life, causing stunned disbelief amongst his colleagues and patients. His teenage daughter refuses to believe it was suicide as this would go against all of the principles her father stood for, therefore she is convinced it was murder. She enlists the help of a former patient to try to get to the truth. However, the truth turns out to be both surprising and disturbing.
Cast

Stephen Boyd
Alex Stedman

Jack Hawkins
Sir Frederick Belline

Richard Attenborough
Alfred Price-Gorham

Diane Cilento
Anne Tanner

Pamela Franklin
Catherine Whitset

Paul Rogers
Dr Milton Gillen

Alan Webb
Alden Hoving

Rachel Kempson
Mildred Hoving

Peter Sallis
Lawrence Jacks

Patience Collier
Mrs Belton