ROPE (1948) is Alfred Hitchcock's murder/suspense film that showcases the killing in its second shot. ROPE is often described as the film with no edits or cuts.
On further examination...Hitchcock's gem actually contains 10 edits. Five of them are hidden as the camera lens is filled by foreground objects. The other five edits are regular hard cuts that not many people either realize or acknowledge. I've isolated all 10 edits in the video below so you can learn from the Master of Suspense on how to hide your edits without losing momentum in your story.