Lamb to the Slaughter

A woman devoted to her husband is surprised by his wish to divorce. Without thinking too much she takes a lamb leg from the freezer and hits him in the head, killing him. She considers an alibi and cooks the lamb in the oven. When the police arrive, she acts like someone has killed her husband and offers the policemen to eat their last dinner. They all sit down and eat the leg wondering how the man was killed.