

The Third Secret (1964)
The Story of a Man Searching for a Killer Who Might Be Himself!
Plot Summary
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.
Full Cast & Characters

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

Freda Jackson
Mrs Bales

Judi Dench
Miss Ada Humphries
Director & Crew
Charles Crichton
Director
Official Trailer

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Frequently Asked Questions
Where can I watch The Third Secret online?
The Third Secret (1964) is available to stream on various platforms. You can also watch it online via our Watch Online button.
What is the IMDb rating of The Third Secret?
It has an IMDb rating of 6.2/10 based on 30 votes.
Who directed The Third Secret?
The Third Secret was directed by Charles Crichton and released in 1964.
How long is The Third Secret?
The Third Secret has a runtime of 1 hours and 43 minutes.
Movie Details
- Release Date
- 1964-02-02
- Status
- Released





