- For the West German theatrical version as well as all subsequent VHS and DVD releases the demise of the killer was cut. Only in 2007 the uncut version was released by EuroVideo.
- In the television version of the film, scenes delted include:
- All scenes involving Willy and Anneke looking for the killer.
- John and Eric in a deeper conversation about Eric's ex-girlfriend, who was also John's ex-girlfriend, and is Anneke's mother.
- Laura in therapy with Ruysdael, discussing Eric.
- Eric using 2 different flags (1 for the where the killer struck, and 1 for where the victim is found).
- Two night watchmen on the canal trying to search for the killer.
- Eric and Vermeer thinking they caught the killer but only finding the oxygen tank.
- When released in the UK, this title was cut by 6 seconds by the BBFC. A close-up shot of a knife between a woman's parted legs was removed. The cuts were waived for the 2009 Nouveaux release.
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