Mary reveals in this episode that she lives four hours from her mother's house.
This episode features the famous shot of Mary hugging Lou, Murray, and Ted, accidentally crushing Ted's hat. It was featured on the opening credits starting with Season 2. This scene was updated and re-filmed for the credits starting with season four.
Mary: (on the phone with Rhoda) I know no one's supposed to be here, but I just heard the elevator...no I can't call the police, what am I going to say, that I heard an elevator? I have to wait until the killer's off the elevator... (hearing people at the door) there he is! And he brought his gang!
This episode was filmed on November 13, 1970.
Episode Title: Christmas and the Hard Luck Kid II
James Brooks wrote the original "Christmas and the Hard Luck Kid" for the first season of That Girl.