Ryan Doom

When Castle and Beckett investigate the murder of a man with human bite marks on his body, Castle's wild theories start flying.

Jimmy offers to attend the deli guy's Halloween party in Sabrina's boyfriend's place. Meanwhile, a box of videos from prison arrives and Jimmy must decide whether or not to let Hope see them.

Jimmy teaches Hope to crawl and so the family must baby-proof the house. Meanwhile, Virginia is outed as a junk-saving hoarder and Jimmy makes frequent unnecessary trips to the grocery store to see Sabrina.

Maw Maw proves that you're never too old to go weak at the knees and Jimmy takes Sabrina to visit her college boyfriend.

Sabrina's cousin Shelley is hired to babysit Hope when Jimmy returns to work. Meanwhile, Burt urges Virginia to quit smoking.

Jimmy's spirits are low when Sabrina's relationship with Wyatt becomes serious, so Virginia and Burt convince him to create a make-believe girlfriend to make her jealous.