Bobby, It's Cold Outside is the tenth episode for Season 31.
Synopsis
Sideshow Bob gets contracted as this year's mall Santa. Meanwhile, someone is stealing all the Christmas packages off people's front porches.
Full Story
Cassandra Patterson is Sideshow Bob's new neighbor when he is living at a lighthouse, and she recommends him as a mall Santa. Working in the mall, he meets Bart but is unable to kill him because of being dedicated to his acting role. To prove he is not the villainous "SB" (who turns out also not to be Selma Bouvier) who Lenny says is stealing packages, he promises Bart he will track down the realculprit.