The story felt very much like a blueprint for the typical film-noir. The detective falls for the girl he's trying to hunt or pin down and goes to all sorts of lengths to protect her from perceived evil. The first part of the film is a pretty long flashback but then it continues in story present, which was quite surprising for me. A lot of important decisions hinge on being at the right place at the right time (ie wrong) and there are one or two moments where I felt that randomness did overtake a bit.
Mitchum and Douglas are incredibly impressive, the other characters are not completely one-dimensional but the film is simply too short to give them a lot of time to delve into character. Especially Greer should have gotten more screen time to get more evil out of her character, I felt.