To investigate the murder and robbery of a rich socialite, Beckett poses as Castle's date to a charity ball; Castle seeks information from a jewel thief who finds him very irritating.
After Robin asks Barney to sell his bachelor pad so they can build a home together, Barney is reluctant and drives away potential buyers. Meanwhile, Lily’s commitment to her job as The Captain’s art consultant strains her relationship with Marshall.
Jennifer (Bianca Kajlich) and Audrey (Megyn Price) practice their match-making skills and inadvertently end up date-less while Adam (Oliver Hudson) and Jeff (Patrick Warburton) score financial gain in the process. Meanwhile, Russell (David Spade) tries a new tactic at "fixing himself up" and finds that staking out a building can generate unanticipated results.
When Grayson helps Andy with his tryouts for a new best friend, Jules and Ellie step in to run the bar. But they soon find it's harder than they thought. And Travis and Laurie spend their first weekend alone with Baby Bobby.
[Season Finale] The team investigates when a former drug addict insists she saw her son in a park three years after he allegedly died in an apartment fire.
