"The Ghost Ship" (1943)

One of those paranoid thrillers where a young innocent is held captive by a psycho killer...it's usually a girl in an old house (see "Die, Die My Darling", "You'll Like My Mother"). The twist here is that it's a young man, Russell Wade, who signs on as 3rd officer on a merchant cargo ship with a kindly captain (Richard Dix). But when crewmen start dying under mysterious circumstances Wade starts to suspect his boss is the real loco en la cabeza killer. Some scary set pieces and a moody fogbound setting on the high seas make for some tense viewing.