Hal Devi

The team is called upon by the governor when a virus leaves his daughter with only 24 hours to live; Walter receives a letter about his sister.

The BAU investigates an urban vampire who kidnaps his victims at night and holds them underground in the sewer system; Reid makes a difficult decision in prison.

Max takes Caroline to see her father in prison on her birthday.

When a recruit officer at the NYPD Academy is killed, Beckett and the team go back to their old training ground to investigate. Meanwhile, Castle must reckon with a decision with profound consequences for him and Beckett.

While investigating a deadly dispute, Kensi connects with a discharged Navy intelligence officer who has post-traumatic stress disorder.