Movies: Nunnally Johnson Productions

A sister and her disturbed twin are implicated in a murder and a police detective must figure out which one's the killer....

As told to a psychiatrist: Mr. Peabody, a middle-aged Bostonian on vacation with his wife in the Caribbean, hears mysterious, wordless singing on an uninhabited rock in the bay. Fishing in the vicinity, he catches...a mermaid. He takes her home and, ...