Incredibly underrated Hitchcock. No, it's not on the level of his best work, but as Stonez says in the post immediately below this, it has a lot going for it both visually and thematically. And you should never need any prodding to watch anything that Montgomery Clift is in.
This is a consistently beautiful film from beginning to end, with so many virtues - a wonderful cast, effective location shots and well paced storytelling. The unusually somber and quiet narrative for a Hitchcock film culminates in a very moving final act.
An underrated and very solid Hitchcock that trades thrills for overwhelming guilt. While the villain is a little weak the very good performance by Clift and the lovely cinematography (full of great symbolism) help lift this film that could've ended up subpar.