6th month pregnant Mary Malone was waiting patiently for her detective husband to come home from work. When he comes home the say their hellos and have a drink. While they are relaxing Mr.Malone does something strange but Mrs. Malone ignores it and continues talking
I'm going to the store to get some things for supper
Mr.Malone finally talked to his wife and told her he was leaving her and that he will be sure she is looked after and given money. Mrs.Malone is in shock but gets up and goes to cook dinner.
Mrs.Malone grabs a lamb leg for their dinner. When she goes to the kitchen to cook it she sees Mr.Malone standing by the window and hits him in the back of his head with the lamb leg. This brings her out of the shock she is in and she has a clear mind and begins to think about what she has to do and what she's going to do.
"Lamb of the slaughter" is a story about Mrs.Malone who was a 6th month pregnant lady who's husband wanted to leave her. When he broke the news to her she was in shock and killed him. Once that happened she knew she had to cover it up so she wouldn't get caught and she was successful, she got an alibi and got rid of the murder weapon.
Mrs.Malone goes to the store to get an alibi and when she comes home she "finds" Mr.Malone and calls the police
The detectives come and try to figure out who killed Mr.Malone. While they are there Mrs.Malone asks them to eat the lamb that she made for Mr.Malone and they agree.