[1] The film was produced in an English and a German version, starring different actors in the lead roles but otherwise featuring an almost identical cast and crew.

It starred William Lucas in the English version and Joachim Fuchsberger in the German one.

The screenplay was written by Basil Dawson and Donald Taylor.

The German dialogue was written by Horst Wendlandt and Gerhard F. Hummel [de].

[2] In Germany, the FSK gave the film a rating of "16 and up" and found it not appropriate for screenings on public holidays.