The Treason cast features Olga Kurylenko, Oona Chaplin and Ciarán Hinds. This info article contains minor spoilers and character details for Matt Charman’s 2022 Netflix miniseries. Check out more streaming guides in Vague Visages’ Know the Cast section.

Treason follows a British intelligence agent named Adam. After the poisoning of MI6’s head officer, he assumes control while investigating a political conspiracy. Meanwhile, a former Russian spy tracks down a mysterious MI6 agent known as Dorian. Here’s every main actor and character in Treason.

Read More at VV — Know the Cast & Characters: ‘The Recruit’

Treason Cast: Olga Kurylenko as Kara

Character Profile: A former Russian spy. She was thrown out of the Foreign Intelligence Service after a disastrous mission in Baku. Kara seeks help from a longtime MI6 contact.

Kurylenko’s Resume: Nika Boronina in Hitman (2007), Julia in Oblivion (2013), Camille in Quantum of Solace (2008), Headmistress Kirova in Vampire Academy (2014), Antonia/Taskmaster in Black Widow (2021)

Read More at VV — Know the Cast & Characters: ‘Glass Onion: A Knives Out Mystery’

Treason Cast: Oona Chaplin as Maddy

Character Profile: A former British soldier. She is married to MI6’s new head officer. Maddy utilizes her military skills when a sniper targets her family.

Chaplin’s Resume: Perla de las Dunas Receptionist in Quantum of Solace (2008), Talisa Stark in Game of Thrones (2012-13), Greta in Black Mirror (2014), Young Ruth in The Longest Ride (2015), Lisa Page in The Comey Rule (2020)

Read More at VV — Know the Cast & Characters: ‘The Invitation’

Treason Cast: Ciarán Hinds as Sir Martin Angelis

Character Profile: The head of MI6. He loses power after being poisoned. Angelis keeps a secret cache of kompromat that allows him to blackmail anyone who gets in his way.

Hinds’ Resume: Gaius Julius Caesar in Rome (2005-07), Roy Bland in Tinker Tailor Soldier Spy (2011), Aberforth Dumbledore in Harry Potter and the Deathly Hallows: Part 2 (2011), John Franklin in The Terror (2018), Pop in Belfast (2021)

Read More at VV — Know the Cast & Characters: ‘The Big 4’

Treason Cast: Charlie Cox as Adam

Character Profile: An MI6 agent and Kara’s former lover. He becomes the new agency head after Angelis’ poisoning. Adam is suspected of being a double agent.

Cox’s Resume: Giovanni Bruni in Casanova (2005), Owen Sleater in Boardwalk Empire (2011-12), Jonathan Hellyer Jones in The Theory of Everything (2014), Matt Murdock/Daredevil in Daredevil (2015-18), Michael Kinsella in Kin (2021-)

Read More at VV — Know the Cast & Characters: ‘Who Killed Santa? A Murderville Murder Mystery’

Treason Cast: Beau Gadsdon as lla Lawrence

Character Profile: Maddy and Adam’s daughter. She gets bullied at school. Ila panics when a gunman targets her family.

Gadsdon’s Resume: Young Princess Margaret in The Crown (2016-19), Young Jyn in Rogue One: A Star Wars Story (2016), Young Lisbeth Salander in The Girl in the Spider’s Web (2018), Young Enid in Censor (2021), Young Antonia in Domina (2021)

Read More at VV — Know the Cast & Characters: ‘Bardo: False Chronicle of a Handful of Truths’

Treason Cast: Tracy Ifeachor as Dede Alexander

Character Profile: A CIA agent. She warns Maddy about Adam’s secret activities. Dede looks after the CIA’s best interests.

Ifeachor’s Resume: Abigail Naismith in Doctor Who (2009-10), Lydia Bates in Quantico (2016-17), Kuasa in DC’s Legends of Tomorrow (2017-18), Tara Coleman in Treadstone (2019), Cleo Roberts in Showtrial (2021)

Read More at VV — Know the Cast & Characters: ‘God’s Crooked Lines’

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The Treason cast also includes:

• Alex Kingston as Audrey Gratz
• Samuel Leakey as Callum Lawrence
• Adam James as Patrick Hamilton
• Kevin Harvey as Olamide Bello
• Syrus Lowe as Kit Harper
• John Lightbody as PPO Frank Scott
• Dinita Gohil as Zoe
• Joe Macaulay as PPO Pete Barnes
• Brian Law as CIA Agent Tao
• Danila Kozlovskiy as Lord Anton Melnikov
• Sargon Yelda as Malik Banajee