This film is a deft illustration of the Hitchcockian principle of letting the audience in on a dastardly secret, rendering the ensuing mundane scenes rivetingly tense. The most simple and natural occurrences become plot twists and Alfred Hitchcock effortlessly ushers the story along to its nail-biting conclusion. By beginning with letting the audience know that a man wants to kill his wife, he imparts a morbid curiosity and sense of impending doom into every word and gesture. It’s standard Hitchcock fare, and as such it’s superb.

Closest comparison: It’s like an episode of Columbo as told by Alfred Hitchcock.

Setting: Drama
Plot: Mystery
Tone: Suspense