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Wandering around in the darkness, an amnesiac (Walter Abel) can't shake the feeling that he's murdered someone. When it develops that a prominent (if somewhat shifty) theatrical producer has been killed, our hero thinks that he's guilty. But unemployed actress Marie Smith (Margot Grahame) isn't completely convinced, so she helps him reconstruct the clues and -- hopefully -- track down the real killer. Walter Abel and Margot Grahame are more felicitously teamed here than they'd been as D'Artagnan and Milady de Winter in the previous season's Three Musketeers. Based on a novel by Gelett Burgess, Two in the Dark was remade in 1945 as Two O'Clock Courage (the book's original title).