I Thank a Fool is a 1962 British Metrocolor crime film directed by Robert Stevens and starring Susan Hayward and Peter Finch.

Dr. Christine Allison is convicted of manslaughter for the mercy killing of her terminally ill, married lover.

Help comes from a surprising source – she is approached by Stephen Dane, the man who prosecuted her, to look after his disturbed wife Liane.

Christine tells Liane the truth and persuades her to go back to her childhood home in Ireland to see her father.

During a recess, she notices Ferris looking at his heirloom pocket watch, though Liane had stolen it and had it with her the night before her death.

Sol C. Siegel bought the film rights in March 1957, prior to publication, as a vehicle for Inger Stevens who the producer had under personal contract.

[3] By August the lead role was given to Ingrid Bergman with filming to take place in England and Ireland.

Siegel set up the film at MGM where the producer was making a slate of movies including Home from the Hill, Some Came Running, Bachelor in Paradise, and The End of the World.

In July 1960 MGM announced the film's stars would be Susan Hayward and Stewart Granger.

The job of directing was given to Robert Stevens who had never made a film before but had a strong reputation as a television director.