Castle and Beckett investigate the hit-and-run death of a bike messenger, brutally murdered to prevent him from delivering a package, the contents of which could free a wrongly convicted man from prison. In a surprising twist, this tragic death is linked to a murder case that Captain Montgomery investigated a decade earlier. To solve the present murder, Castle and Beckett must dredge up the past by uncovering the secrets and scandals of a prominent New York family.

When a murdered man is found stuffed in the garbage chute of an apartment building and two women arrive to ID his body -- one his wife and the other his fiancée -- Castle and Beckett have their hands full keeping the women from killing each other as they work to peel back the layers of the victim's double life. Was it a jilted woman, corporate espionage, or a much darker secret that led to his demise?.