It has been said to be one of Hitchcock's more interesting "failures". I loved it and I think the reason that it has been deemed a failure is because it doesn't consentrate on suspense as much as his others around that time. Plus David O. Selznick was not the best partner for Hitch and interfeered a lot.
The story revolves on the axis of psychoanalysis and maybe consentrates on the theme a little too much as Hitch was interested in the criminal mind. But it is obviously a classic Hitchcock and, contrary to another reviwer, has stood the test of time.
As for suspense, there are a number of obviouse occasions where it is being put to great use- With the gun at the end and the ski slope to name but two. And all through the movie there is a lingering shadow, or rather layer of dread that they may be found out before Peck is cured.
There are also some ingenuitive and ingenious Hitchcock moments; the milk glass and the flash of colour (in a black and white movie) as the gun is fired- from a great angle... plus Dali's dream sequence which is entrawling! Just one of those examples will definetly whet your apetite.
Ingrid Bergman is absolutly fantastic in this film; better, even, than in Notorious, and is a delight to watch. It will strike you straight away and she keeps it up throughout the entire picture.
Gregory Peck is, as always, a treat and matches Cary Grant as one of Hitchcock's top leading men.
The twists at the end are captivating and will get your pulse racing.
Maybe Hitchcock's most unusual U.S film and a must have for collectors and fans. It pairs well with the different but brilliant Notorious!