When Kenan’s former boy bandmate-turned-huge popstar comes to town, Kenan finds himself doubting Gary’s effectiveness as a manager and contemplates a change. Mika gives Aubrey and Birdie a lesson in…

Dex faces off against Artie Banks to take down wealthy real estate mogul Randall Tapper. Meanwhile, Detective Cosgrove leads an investigation to find Wallace Kane, a prisoner on the loose.

With tensions rising between Castle and Beckett, Castle finds himself a new partner — Detective Ethan Slaughter (guest star Adam Baldwin, “Firefly”), a tough and colorful cop from the city’s…