Barbara Stanwyck witnesses a murder and the culprit, played by the usually sinister George Sanders, is trying to drive her insane after this event. Gary Merrill is the detective who tries to sort this all out while he is falling for Cheryl (Barbara).
The flaw here is in the writing. Sanders, as Mr. Richter, should have immediately been under much more suspicion as he was a former Nazi who came into this country legally. Who can believe that one? In addition, he is an author whose books justify the deaths of certain people. Sounds horribly familiar to me.
Stanwyck gives her usually good performance as a tormented woman who is driven mad by Richter.
The roof scene finale is exciting but comes too late following big errors in the movie writing.