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The film begins with a voice-over narrator explaining that Cherry Hill Prison, built in Philadelphia in 1821, was modeled after a medieval fortress. According to the production notes, many scenes were filmed in Philadelphia, including the Philadelphia General Hospital, Logan Square, City Hall and Independence Hall. Other scenes were filmed in Griffith Park in Los Angeles. On the viewed print, all credits appeared at the end of the film. A news item in Hollywood Reporter notes that Dorothy Hart replaced Gale Storm in the cast after Storm was released from her Universal contract.