A mysterious diver hiding in Amsterdam's canal system embarks on a rampage of gruesome murders, terrifying city officials and leaving few clues for the city's best detective, who doesn't suspect that both his new girlfriend and twelve-year-old daughter may be closer than he is to finding the killer.

Documentary exploring why Belgian television doesn't invest more money in Belgian cinema as is the case in e.g. the netherlands.

Documentary about the current state of German cinema. Produced for German television.

A subtle account of the chimpanzees' behaviour in Burgers Dierenpark in Arnhem, on the occasion of the publication of the book Chimpansee Politiek by ethologist Dr. Frans de Waal. A unique experiment shows us how complex the social strategies in the community of this fascinating anthropoid ape are. Haanstra managed to capture almost all aspects of chimpanzee behaviour: display of skill, teasing and pestering, grooming, resting, playing, motherly behaviour, submission, sex and violence. Eventually, the film was also screened to the apes.

In Burgers Zoo the new residence of the gorillas is put in operation. Also the country of origin, Cameroon, is visited.