I enjoyed how Hitchcock tried to make the film into one continuous shot. So many times when plays such as this (where all of the action takes place in one room) are adapted into films, they feel awkward and claustophobic. The fluid camerawork explored the set as you would if you were watching the play, echoing the movements of your eyes as you followed characters around the room. It made the film seem as if being set in one room was a bonus, not an enforced limitation. I think the continuity upped the suspension, as you feel as if you are watching everything unfold in real time. Not one of Hitchcock’s best, but one of his most interesting to look at from a directorial perspective.

This movie is remarkably gripping. Once it got going, I couldn’t take my eyes off the screen for a moment. Well worth watching.