When most of the office is off sick with the flu, Lauren must work with a big client who is facing a PR disaster.
A rash of murders in Kansas City sends the team there to create a profile of the murderer. Meanwhile, Blake suffers a difficult homecoming as she works with her father and brother to close the case.moreless
Olivia Lockhart's dream of being a federal judge is about to happen, She finds out that she isn't ready to leave romance and family behind.
During the pro-bowl weekend in Hawaii, the team catches a case investigating a murder and finds help from Arian Foster, running back for the Houston Texans.
The team tries to help a young man with amazing memory who is taken hostage to help get to a weapon with "smart" bullets which can shoot a target even behind cover. The situation gets complicated when Ed himself is taken hostage.moreless
The latest investigation for the detectives involves a bride who was murdered immediately preceding her nuptials. Angela, Frankie and Frost focus their attention on Jane's new neighbor.
Jane is busy being honored for her work with the L.A PD but her special night gets ruined when a wife accuses Jane of having a affair andstealing her husband.
Grayson decides to find out why Will's company (Vanessa's Ex-fiance) is being undercut by another company. Also Grayson wants to find out whether Will still has feelings for Vanessa.
Castle and Beckett compete against Ryan and Esposito to see who can solve their murder case first. A few twists make the two teams work together to figure things out.
Dr. John Martin, a negotiator for the Department of Energy Nuclear Response Team, is called in when a disgruntled grad student takes hostages at a university. The student, Seth Todtman claims to have invented a cold-fusion bomb and is threatening to detonate it, killing millions, unless the government brings him five people on a list and kills them for him. Martin's colleagues dismiss Todtman as a crank, until a sample device he provides goes off with megaton force, wiping out a DOE team and the top-secret facility where they work. Faced with an impossible choice, Martin meets with Todtman face to face and tries to understand the logic behind his rage at the people he wants killed: cruel foster parents, corrupt professors, a heartless librarian. As the clock ticks, Martin tries to reason with Todtman while the military tries to find a way to disarm the device. But, even if they stop Todtman, can they stop the knowledge he has unleashed on the world?moreless