A priceless piece of art goes missing while in transport, and the transporter is murdered. Castle and Beckett join forces with a witness in order to retrieve the painting and find the killer.
Johnny Sack turns up the heat, Carmela counts her blessings, Christopher has an unexpected visitor, and AJ demonstrates his business acumen.
Tony meets with Johnny Sack to discuss the fate of Tony B, who is responsible for the killings of Joe Peeps and Billy Leotardo. Johnny wants revenge, but Tony won't give up his cousin for execution.
A rumour involving his cousin threatens Tony's relationship with Johnny Sack, Meadow helps her boyfriend get a job, and Carmela learns that good legal help is hard to find.
Tony thinks of an old flame, Tony B receives some upsetting news, and Tony treats himself to a night in the city.