On the whole, The Man Who Knew Too Much is a dandy of its popular kind.

Instead of using music as a background for action, Hitchcock moves it up front... The chief drawback of these musical stage-waits is that they allow the audience to think back over the story and conclude that it doesn't make much sense.

It's like a long novel that could be tightened, yet many would prefer it as it is.

The Man Who Knew Too Much is a fun watch—not one of Hitchcock's greats, but entertaining nonetheless.