Fritz Lang's career was in freefall when he made this psychological thriller for low budget studio Republic. Surely his lowest point in Hollywood. It did no better than its predecessors, and was forgotten until the last copy was saved and restored in the '70s. And then positively reappraised.
Unlike most film noir, this is isn't contemporary. It is set in Victorian New England, and conveys the minor chords of gothic horror . Louis Hayward plays a struggling middle aged novelist who kills his attractive housekeeper and convinces his brother to help him sink her body in the river that runs past the back of his house.
When the body is found, the murderer makes sure the police suspect the innocent brother. The author is convinced his stories should draw from life, and so starts to spin his escalating paranoia into his next novel. He feels like the kind of monomaniac found in Edgar Allen Poe.
As often with Lang, there is some Hollywood Freud. The depths of the river represent the subconscious of the killer, which occasionally releases troublesome detritus to the surface. It's another typically strange, dreamlike noir from the director, hardly impaired by his reduced circumstances.