Treason is a British spy thriller miniseries that premiered in December 2022. Created by Matt Charman, the series stars Charlie Cox as Adam Lawrence, a deputy chief of MI6 who is unexpectedly thrust into the top position after his superior is poisoned. As Adam navigates his new role, he becomes entangled with a Russian spy from his past, played by Olga Kurylenko, leading to a web of secrets, lies, and betrayals. The series is praised for its taut narrative, compelling performances, and exploration of the personal and professional challenges faced by those in the intelligence community.