My Cousin Rachel is a 1952 American romantic mystery film directed by Henry Koster and starring Olivia de Havilland, Richard Burton, Audrey Dalton, Ronald Squire, George Dolenz and John Sutton.

However, back in Cornwall, Philip receives disturbing letters from Ambrose, complaining of Rachel's treatment as well as that of the physicians taking care of him.

Mr. Kendall believes Ambrose unsound of mind, raising the possibility that he has inherited his deceased father's brain tumour.

When Philip travels to Florence, he meets a man named Guido Rainaldi, who tells him Ambrose has died of a brain tumour, producing a death certificate as proof, and that his will left the Cornwall estate to him upon his 25th birthday.

Rachel later tells Philip that her promise did not mean marriage, that she will never marry him, and she only showed him love the previous night because of the wealth he gave her.

In his fever, Philip imagines a wedding with Rachel, and wakes up three weeks later convinced they are married, and surprised to hear from the servants that she intends to move back to Florence.

Daphne du Maurier's agent initially attempted to sell an adaptation of My Cousin Rachel for $100,000, as well as 5% of the international box office.

"[5] Cukor also disapproved of the comedic additions, and without achieving his desired revisions to the screenplay, opted to quit, with Fox's press release explaining his departure as being due to "artistic differences.

[7] Although uninterested in the novel or screenplay, Burton accepted the role due to his respect for Cukor, and he traveled to New York City for production.

[10] Bosley Crowther, writing for The New York Times, declared the film to be an "excellent" adaptation of du Maurier's work, praising its suspense, atmosphere and Burton's performance.

[4] The 1999 Blockbuster Entertainment Guide to Movies and Videos awarded My Cousin Rachel four and a half stars, acclaiming it as "Atmospheric.

[7] A 1990 television version directed by Brian Farnham followed, with Professor Nina Auerbach judging it as a "Superficially" more faithful adaptation, including a more complex treatment of Rachel, played by Geraldine Chaplin.