Let's think how to put together the all-star team of menace.
We'd have Paul Shrader direct, and he'd never shoot a centered, straight-on angle. The movie would be filled with nearly empty frames, where the actors can be seen only far off to the side, and the scenes would begin with tracking shots through an alley to the characters, as if from a stalker's P.O.V. Doors and windows would open and close near our protagonists, manipulated by unseen hands, for unspoken reasons.
We'd have Harold Pinter write the screenplay, and every line would be pregnant with vague menace. The character's actions would be filled with unexplainable and unexplained malice. People would repeat with gravitas lines that don't seem important. People would tell awful stories about their youth and their excessively stern parents.
We'd locate it in Venice at night, where every corner seems to turn into a deserted and foggy dead end, every street is a waterfront, and there are as many ghosts and echoes as living people.
We'd star Christopher Walken.
Sorry, guys, it's already been done. This is a spooky, creepy movie, well presented by the all-star team. I really found only one flaw. The menace was not left unspoken and threatening. The movie ends with people doing explicit and unspeakably awful things for no reason.
It's one strange movie. Great use of Venice as the backdrop for the story. It is a masterpiece in its own Euro-noir genre. I liked it a lot, but don't expect a typical cinema experience, or a happy ending.