Night Agent Season 3 Cast: Gabriel Basso Returns as Istanbul Hunt, Dark-Money Plot Expand the Stakes

The night agent season 3 cast centers on Gabriel Basso’s Peter Sutherland returning to chase a Treasury agent who fled to Istanbul with sensitive government intel, setting off a cross-border pursuit that collides with assassins, dark money and a relentless journalist. This season also widens the institutional stakes: the plot threads involve the FBI, the Secret Service and the President’s inner circle.

Night Agent Season 3 Cast: Returning Players and Their Trajectories

Gabriel Basso is back as Peter Sutherland, haunted by choices made in season 2 and now tracking a mysterious broker while paying the cost of those prior events. The role follows Basso’s past credits in Super 8, A House of Dynamite, The King of Summers, Hillbilly Elegy, The Big C and Trigger Warning. Fola Evans-Akingbola returns as Agent Chelsea Arrington, who after saving the day in the first season is now the First Family’s top Secret Service officer.

Jacob Monroe, the broker who has been Peter’s nemesis, is shown with a closer, more human dimension this season. Louis Herthum, who portrays Monroe, brings credits that include Westworld, Longmire, The Peripheral and Murder, She Wrote. Ward Horton’s Richard Hagan remains President of the United States; that character enjoys bipartisan popularity and aims for a lasting legacy, yet tough choices and betrayals from those closest to him force a decision over whether he will be remembered as a great president or a good man. Horton’s credits include Annabelle, Annabelle: Creation, The Wolf of Wall Street, Ford v Ferrari, The Gilded Age and Pure Genius.

Peter Sutherland and the Istanbul Intelligence Trail

Peter’s immediate mission is to find a young Treasury Agent who fled to Istanbul with sensitive government material—an action that triggers a race against assassins, dark money and an aggressive journalist. That investigation expands into a probe of a dark-money network with ties to a deadly terrorist attack, linking the personal hunt to larger national-security consequences. Because the Treasury agent fled with classified material, the search draws in both security services and federal law enforcement, escalating the risk to those involved.

New Additions: Genesis Rodriguez and David Lyons Join the Pursuit

New cast members Genesis Rodriguez and David Lyons join the ensemble. David Lyons becomes Peter’s new partner, although the season frames that partnership with uncertainty—the show signals he isn’t entirely sure he can be trusted. The series promises “new thrills, new worlds, new stunts, new characters, and new adventures, ” language that signals a shift in scale and tone as the hunt moves overseas and into organized finance.

FBI Deputy Director Aidan/Aiden Mosley and the First Family’s Security

The night agent season 3 cast also features an institutional lineup: the FBI’s deputy director—named Aidan Mosley in some text and spelled Aiden Mosley elsewhere in the provided materials—is described as a principled, no-nonsense leader with decades of experience who is one of the few aware of Peter’s secret about the broker and does his best to back him. Chelsea Arrington’s elevation to the First Family’s top Secret Service officer places the Secret Service squarely in the center of the White House’s response to the unfolding scandal and the hunt for the broker.

Richard Hagan, Jacob Monroe and the Broader Dark-Money Thread

Beyond the chase, the show frames a tension between the President’s political legacy and the murky financial networks behind the attack tied to the broker. The conflict is rendered personal for Richard Hagan, whose standing and choices are tested by betrayals. The antagonist Jacob Monroe is shown as more than a one-dimensional villain, with scenes intended to reveal a human side behind his role as a broker, broadening the moral complexity of the pursuit.

Supporting actors named in the season roster carry varied credits that sketch the cast’s experience: Albert Jones, tied to roles in Echo Valley, The Bourne Ultimatum and The Spiderwick Chronicles, plays the FBI deputy director’s role; Amanda Warren, who has credits including The Purge, The Leftovers, Dickinson, East New York and Gossip Girl, portrays Catherine Weaver, the operator who pulled Peter out of trouble and gave him a shot at redemption and is determined to finally take down the elusive broker.

What makes this notable is the way individual decisions—an agent fleeing with intel, the President’s response to betrayal, a deputy director’s protection of a secret—cascade into institutional confrontation: the hunt to Istanbul unfolds into an international manhunt that exposes a dark-money network and its links to deadly violence.

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The season’s cast list and plot promises position the show to pair espionage set pieces with questions of accountability and loyalty across the FBI, the Secret Service and the Presidency, while the new international thread pushes the action into Istanbul and a finance-linked conspiracy tied to a deadly attack.