Diplomat Season 4 Teaser Signals October Return
Netflix’s political drama The Diplomat returns for Season 4 on Oct. 15 with a new teaser and first-look images, reuniting Keri Russell as Kate Wyler and Rufus Sewell as Hal Wyler as the series centers on two collapsing marriages and a Grace–Hal conspiracy to steal Russia’s most powerful weapon, thrusting the United States toward war as Kate fights to stop them.