Mary is waiting for her husband, a detective , to come home from work. After Mary sees her husband acting odd, she repeatedly tries to make him dinner.
Patrick informs Mary that he's leaving her and their unborn child. As he is blabbing on about his case, she sits there in shock, seemingly emotionless.
After the pregnant wife hears the case, she then mindlessly walks down to the celler to prepare a leg of lamb for dinner.
She then walks upstairs, and without a word, without a sound, she smacks Patrick over the head and, after standing completely still for a moment, he falls dead to the ground.
Police and detectives arrive at the house for inspection. They assume that the murderer used a weapon of some sort, and that it was lying around somewhere around the house. While the police are searching, Mary sits down with a detective and tell him her whole story, and how it went down.
Mary then cleverly insists that the Police and detectives eat her delicious meal that she provided, and that she couldn't possibly eat it, especially after what had just happened. The men reluctantly agreed, and then discussed how the weapon could be right under their noses