While in many respects one of Hitchcock's lesser films, "Suspicion" has some good performances and a degree of suspense that is as sustained as in any of his films. The movie gets quite a lot out of a relatively simple plot.
Joan Fontaine gives an excellent performance as Lina, a quiet young woman who finds herself swept away by, and suddenly married to, the charming but irresponsible Johnnie, played by Cary Grant. Not long afterwards, she begins to question his behavior and his intentions, and soon she is terribly afraid, both of what he might have done and of what he might do. Whenever she manages to overcome one of her fears, no sooner does she do so than her husband gives her a new reason for suspicion. There really isn't much more to it than that, but Hitchcock gets a lot out of this basic premise. The tension keeps building, and Fontaine's performance allows the viewer to feel all of her fear and anxiety. Not everyone likes the way that it all ends, but it is worth seeing and deciding for yourself what you think about it.
The rest of the cast have mostly limited roles, but give good performances that add to the portrayal of the main characters. Especially good is Nigel Bruce, who provides a few lighter moments as one of Johnnie's old cronies.
While lacking the complexity and excitement of Hitchcock's best pictures, "Suspicion" is still a good example of his ability to keep the audience in lasting suspense. Most Hitchcock fans will want to see it.