Amsterdamned is a Dutch thriller film directed by Dick Maas and released in 1988. The film stars Huub Stapel as Eric Visser, a detective investigating a series of brutal murders in Amsterdam's canal system. The killer, who wears a scuba diving suit, is targeting specific victims with a personal vendetta.
As the investigation progresses, Visser becomes obsessed with finding the killer and even puts his personal life at risk. He begins a romantic relationship with Laura, a tour guide who frequently takes tourists on canal tours. However, it soon becomes clear that the killer may be someone close to Visser, as his daughter is also a potential target.
The film is noted for its intense suspense and thrilling action scenes, which were partially filmed in the city's iconic canals. The plot twists and keeps the audience guessing as to who the killer is until the very end. Amsterdamned was a box office success in the Netherlands and paved the way for Maas' later horror films, such as The Lift and Flodder.