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.

The team investigate a Scottish millionaire found dead in his own shark tank, leading Annika to reflect on Jekyll and Hyde.

Tutankhamun invites Tustratta to the palace for a peace offering, but after the Mitanni King declines it, Tut leads his plague-weakened army in a sneak attack through a secret entrance to the enemy's capitol. Meanwhile, as the young Pharaoh is away, Amun leads a revolt against him and orders his priests to kill the king so he can save Egypt from the worship of Aten. After knowing about the assassination Suhad is put in danger and Ankhesenamun kills her. During the attack, a dying Tustratta breaks Tut's leg and instead of tending to his injury, Tut returns to Thebes to destroy the last of his enemies. He conspires with General Horemheb, Ay and Nakht to kill Amun during the festival of Ra at the temple. With the love of his life dead by his own sister and infection setting in, Tut's homecoming is filled with sadness. On his deathbed, Tut makes amends with Ay and Ankhesenamun, who both reassure him he will be remembered for all eternity as a powerful ruler. However, Ay sees that Tut is buried in a lesser tomb meant for one who will never be known, thus remaining undiscovered for over 3,000 years.

Gabriel's chip is hacked, leading to him discovering that Mei Chen is still alive and that she possesses a chip even 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.