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According to Variety, scenarist Bryan Wallace was the son of author Edgar Wallace. The review also noted that all the play's dialogue had been eliminated, and only the barest plot framework remained from the original. The play was, according to the review, modernized for its adaptation to the screen by revealing the criminal early in the picture to emphasize the unravelling of the crime, and by building Barrabal's role into a romantic lead. In Great Britain, the title of the film was The Squeaker, which in underworld slang means informer. The title was changed for American release only a week prior to distribution. Four minutes were cut from the British version before its American release.