Amsterdamned

Amsterdamned is a 1988 Dutch horror movie about a serial killer who hides in the canal system of Amsterdam. The film was directed and written by Dick Maas, and stars Huub Stapel, Monique van de Ven, and SergeHenri Valcke.

Opening from his point of view, a murderer looks around the city of Amsterdam at night through the canals the city is famous for. He sneaks into a Chinese restaurants backdoor and steals a butcher knife while the cooks arent looking. The killer finds his first victim in a local prostitute who, after refusing advances from a cab driver, gets thrown out of the cab. A baglady watches from a distance as the killer plunges the knife into the hooker and drags her back into the water. The next morning, a tour boat on the canal collides with the body of the prostitute, who has been hung on one of the small bridges. As the tourists scream, the body drags on the top of the boat until an opening shows her bloodied body and face.Assigned to the case is detective Eric Visser, a hardboiled detective who is raising his 13yearold daughter Anneke after a split from his ex. He spends an hour in a bath, comes home late from work, and tends to drink now and again. Nevertheless, Eric is praised as one of the best detectives on the force. His partner, Vermeer, meets Eric at the site where the body was found with fellow cop Potter attempting to get through to the baglady, who tells Eric that it was a monster who killed the prostitute and that it came out of the water. ........

Source: Wikipedia