- When originally released theatrically in the UK, the BBFC made cuts to secure a 'A' rating. All cuts were waived in 1993 when the film was granted a 'PG' certificate for home video.
- At least one original release print had the torches in the Bronson Canyon sequence hand-colored by Gustav Brock. Thereafter, the film remained completely B&W until 2017, when UCLA digitally restored the color in its new preservation negative.
- Years later, a Spanish dubbed version was produced. The original title and credits remained intact, but a voice translates the title into Spanish. During the dubbing process, some additional music cues, and some brief narration were added that were not part of the original English language version.
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