TV series
Question everything. Suspect everyone.
An MI6 deputy's bright future takes a sharp turn after a reunion with a Russian spy forces him to question his entire life.
Streaming, rental and purchase options
Checked Sep 2, 2026
Treason is available to stream on Netflix in United States. Use the direct links below to open the provider.
An MI6 deputy's bright future takes a sharp turn after a reunion with a Russian spy forces him to question his entire life.
Choose an episode, then use the watch options above for the show.
Episode 1
Adam Lawrence immediately rises to the top of MI6 after his boss is poisoned. But a surprise meeting forces him to question his whole career.
Directed by Louise HooperWritten by Matt CharmanGuest stars Beau Gadsdon, Samuel Leakey, Alex Kingston, Tracy Ifeachor, Adam James, Sargon Yelda, Kevin Harvey, Dinita Gohil
Episode 2
With his family in fresh danger, Adam attempts to cut ties to his secret asset. Meanwhile, Maddy and Kara form covert alliances of their own.
Directed by Louise HooperWritten by Amanda DukeGuest stars Beau Gadsdon, Samuel Leakey, Alex Kingston, Tracy Ifeachor, Kevin Harvey, John Lightbody, Joe Macaulay, Joanna Horton
Episode 3
In a bid to avoid treason charges, both Adam and Maddy go after Kara. But overheard conversations lead to big doubts about who they can really trust.
Directed by Louise HooperWritten by Matt Charman, Amanda DukeGuest stars Beau Gadsdon, Samuel Leakey, Alex Kingston, Tracy Ifeachor, Adam James, John Lightbody, Joe Macaulay, Jayne Aguire
Episode 4
Adam flees London with the children after MI6 revokes his clearance. Before long, their hiding place is discovered — and blood is spilled.
Directed by Sarah O'GormanWritten by Matt Charman, Amanda DukeGuest stars Beau Gadsdon, Samuel Leakey, Alex Kingston, Tracy Ifeachor, Adam James, Sargon Yelda, Kevin Harvey, John Lightbody
Episode 5
More shocking secrets come to light as an unlikely team works to expose the truth, with lives and the very future of government hanging in the balance.
Directed by Sarah O'GormanWritten by Matt CharmanGuest stars Beau Gadsdon, Samuel Leakey, Alex Kingston, Tracy Ifeachor, Adam James, Sargon Yelda, Kevin Harvey, Syrus Lowe
Episode information updated Sep 17, 2026
Charlie CoxAdam Lawrence
Olga KurylenkoKara Yusova
Oona ChaplinMaddy De Costa
Ciarán HindsSir Martin Angelis
Beau GadsdonElla Lawrence
Samuel LeakeyCallum Lawrence
Alex KingstonAudrey Gratz
Tracy IfeachorDede Alexander
Netflix
Binocular ProductionsUnited Kingdom
