The title was changed to "The Black Book." This is how it appeared when shown on TCM.
Mann and Alton shot the film in twenty-eight days during the summer of 1948.
In two scenes, the background music is the popular Revolutionary song, "Ca ira". The music director clearly knew his stuff.
The failure of the original copyright holder to renew the film's copyright resulted in it falling into public domain, meaning that virtually anyone could duplicate and sell a VHS/DVD copy of the film. Therefore, many of the versions of this film available on the market are either severely (and usually badly) edited and/or of extremely poor quality, having been duped from second- or third-generation (or more) copies of the film.