Cinderella (1950 film) overhears Cinderella humming the waltz played at the ball. Realizing that Cinderella is the mysterious girl, Lady Tremaine locks her in her attic bedroom. Later, the Duke arrives at the château, and Jaq and Gus steal the key from Lady Tremaine's dress pocket and take it up to the attic as Anastasia and Drizella unsuccessfully try on the slipper. Lady Tremaine's cat, Lucifer, ambushes the mice, but Bruno chases him out of the house, allowing the mice to free Cinderella. As the Duke is about to leave, Cinderella appears and asks to try on the slipper. Knowing it will fit,
F. Orlin Tremaine F. Orlin Tremaine F (rederick). Orlin Tremaine (January 7, 1899 – October 22, 1956) was an American science fiction and other magazine editor and writer. He sometimes published under the pseudonym Warner Van Lorne. Prior to editing "Astounding", Tremaine worked as an editor on several magazines, including "Brain Power" (1921-1924), "True Story" (1924), and "Macfadden Fiction-Lover's Magazine" (1924-1925). In addition, he published short stories under the pseudonym Orlin Frederick. He became the second editor of "Astounding Science Fiction" in 1933 following the magazine's purchase by Street and Smith when William Clayton went bankrupt. Tremaine remained editor until 1937, during which