A man accused of murder holds Patrick Jane and others at gunpoint in an effort to clear his name. Now, Jane must think quickly to defuse the hostage situation.
Susan discovers that some of her best moves are being copied by a competitor; Gabrielle hires a private investigator to look into a matter; Tom's doctor prescribes an unorthodox remedy for his depression.
Detective Ryan ends up in the middle of an assassination plot when he is on the security detail of a charismatic congressman; Castle and Beckett help Ryan investigate.
Chloe enlists the aid of her childhood friend, Teddy (Michael Stahl-David), as she prepares for an annual department store warehouse sale.
The doctors and surgeons at Sacred Heart are suddenly burdened by the obtrusive approach to management by Dr. Maddox.