Fog Island is a 1945 American film directed by Terry O. Morse.
Leo, a former convict, is living in seclusion on an island with his step-daughter, the daughter of his late wife.
Leo was framed by a group of former business associates and he also suspects that one of them killed his wife. He has invited the group to his island, tempting them by hinting about a hidden fortune, and he has installed a number of traps and secret passages in his home.
He is aided in his efforts by a former cell-mate who holds a grudge against the same persons. When everyone arrives, the atmosphere of mutual suspicion and the thick fog that covers the island promise a tense and hazardous weekend for everyone.
George Zucco as Leo Grainer
Lionel Atwill as Alec Ritchfield
Jerome Cowan as Kavanaugh
Sharon Douglas as Gail
Veda Ann Borg as Sylvia
John Whitney as Jeff
Jacqueline deWit as Emiline Bronson
Ian Keith as Dr. Lake
George Lloyd as Allerton - Butler