Al Vicente

The BAU team investigates a series of murders in Bakersfield, California. Also, the team welcomes new agent Kate Callahan into the BAU fold, who assists them in their efforts in solving the cases.

Castle and Beckett investigate the murder of Will Medina, the assistant curator of the Natural History Museum. The Museum's personnel believe his death is related to the curse of the ancient Mayan tombs.

Michael uncovers unbelievable news when he seeks revenge for Sara's death, Michael and Lincoln receive an offer from Homeland Security that they cannot refuse, Mahone suffers a terrible loss, and T-Bag is abandoned during his flight to freedom.

Jax has to decide whether to kill Clay and take over the presidency of SAMCRO. Two members of the Galindos reveal themselves to have mixed loyalties and Tara has her own decision to make about whether to stay or go.

As Jax and Tara head off for a new life in Oregon, Clay pays a hitman to take out Tara. Potter uses Juice to find out more about the next big arms shipment.

A man's body is found in a bathtub, and the investigation reveals that not only was he strangled to death, but he was also a millionaire.