From a short story of the same name by W. Somerset Maugham
Bette Davis is the wife of the manager of a rubber plantation in Singapore; as the movie opens, he has been shot to death, and as more information surfaces, secrets are revealed…and the letter that will clear it all up (or implicate someone) has gone astray…
Mr. Otter brought this home from the library where he works; I said, wow, a Bette Davis movie I’ve never even heard of! so we watched it that night, and it was great! Bette Davis was at the top of her form, the writing was excellent, and the moodiness and starkness of the black and white film were amazing.
This was a real winner- good characters, suspenseful plot, beautiful cinematography. It might be hard to find, but it is definitely worth the trouble.