Russ Bain

When Beckett is tasked with protecting a charming billionaire whose life is in danger, she reflects on her relationship with Castle; consumed with jealousy, Castle tries to solve the case as quickly as possible.

A Scottish millionaire found dead in a shark tank becomes Annika and the team’s most high-profile investigation yet. The victim appears to be a generous advocate for the environment, respected innovator and loved family member. But like Jekyll and Hyde, the cracks in his persona begin to show as Annika and the team uncover the hidden monster within.

As the arrests of Sid and the Solanos near, even the best laid plans begin to crumble.

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.

Tut sets out to achieve final victory against the Mitanni, and must destroy the last of his enemies within the Palace to secure his place in history.