Write the gist of part 1 of "lamb to the slaughter"

Roald Dahl's 'Lamb to the Slaughter' is a short story about the murder of police detective Patrick Maloney by his wife Mary. Driven to homicide after her husband's unexpected announcement that he's leaving her and their unborn child, Mary quickly regains her senses after fatally killing him with the leg of lamb.

repetition is used to emphasize a feeling or idea, create rhythm, and/or develop a sense of urgency.

honestly, is this even a but since you asked, he's probably at the store trying to get you food.