Russ Bain

When Beckett is assigned to protect Erik Vaughn, a charming billionaire entrepreneur whose life is in danger, she's forced to reflect on her relationship with Castle which has begun to plateau.

After Gabriel's chip is hacked, he finds out that Mei Chen is still alive. In addition, he learns that she is in possession of a chip far more powerful than his own.

One of Amber's men interrogates Charlie because he believes she works for law enforcement. Meanwhile, Sid frames Mike, Paige learns the truth about Lina, and Carlito and Lucia learn the truth about Johnny's cover.

In order to secure his place in history, Tut sets out against the Mitanni and seeks to destroy the last of his enemies within the palace.