Night Tide (1961)
A young sailor is attracted to a mysterious mermaid performing at a carnival, but soon suspects that the girl is actually a siren who draws men to their watery deaths during the full moon
Miss Bracegirdle Does Her Duty (1958)
Millicent Bracegirdle is a sheltered old woman who decides to go to Paris Her visit does not turn out well when she accidentally enters the wrong hotel room and gets locked inside with a notorious murderer