Alfred Hitchcock Presents Lamb to the Slaughter. (1958) - YouTube
One of the best short films ever made. And it got to the point of Roald Dahl’s story.
“I’ve killed him. What do I do now?” She is anxious and scared through this entire thing.
The cops vaguely suspect something. Then she literally makes them eat the evidence.
The way she giggles to herself at the end. She’s won. She knows she has.
As a child, this story terrified me.