London. A mysterious serial killer brutally murders young blond women by stalking them in the night fog. One foggy, sinister night, a young man who claims his name is Jonathan Drew arrives at the guest house run by the Bunting family and rents a room.
Not a great film, but a remarkable one, with Hitchcock at his most 'innovative.'
– Dave Kehr,
Chicago Reader,
1 Jan 2000
rotten:
The picture has a very, very excellent begining, a mediocre middle and a most deplorable ending. A minor fault is that its running time is about fifteen minutes too long.