Will and Katherine meet secretly. Meanwhile, the API team continues trying to track down Kateb, and Will discovers he shared a common interest with his late boss, David Hadas.
The API team is forced to work with the FBI to try and locate the man they think is Kateb. Will may be able to figure out the next target destination ... but will it be too late?
In the gripping season finale, the API team tries to find their footing in the aftermath of the explosion in Galveston Bay. Plus, Will confronts Spangler.
Feeling unsafe in his apartment, Will reaches out to his neighbor, Andy. Katherine learns more information about the photograph she received. The team gets a new member. While Kale and Truxton size each other up.
Will and Katherine meet secretly. Meanwhile, the API team continues trying to track down Kateb, and Will discovers he shared a common interest with his late boss, David Hadas.
At API, Will keeps a careful eye on Tanya. Plus, after meeting with her financial advisor, Katherine inquires about an investment her husband left her two days before his death.
Kale invites Will over for dinner and gives him some interesting information. Katherine discovers a commonality between her husband and the subject of an old obituary she found.
The CIA asks Miles and Tanya to oversee an interrogation. Katherine receives a mysterious envelope with a picture and a drawing of a four-leaf clover. And Will makes some new discoveries.
Will suffers a shocking tragedy. While he considers leaving his job at API, he begins to uncover clues that point to a sinister conspiracy. Katherine questions her billionaire husband's unexpected suicide.
