This film was incomplete for decades, due to footage that never made it into the American prints and footage that had been cut due to censorship in German prints. The film was restored to its original length in 1995 by F. W. Murnau Stiftung.
The film was released in the United States over three years after its original release in Austria and Germany. An entire reel was edited out of the USA import version of the film, prompting a mixed critical reception in the country.
The trivia items below may give away important plot points.
The film was withdrawn soon after its release in Berlin by the city's censorship authority, as the Saxon police claimed that certain of the film's scenes (specifically the sequence displaying how one could craft rubber gloves that featured another person's fingerprints) could both inspire potential criminals and impede current police investigations. However, the film was ultimately cleared for general release shortly thereafter.