Esme Creed-Miles as Hanna a girl
Mireille Enos as Marissa Wiegler the CIA operative put in charge of the original UTRAX program
Joel Kinnaman as Erik Heller (season 1), a former CIA operative
Noah Taylor as Dr. Roland Kunek (season 1), a scientist
Dermot Mulroney as John Carmichael (season 2), the CIA operative at the helm of both UTRAX programs
Khalid Abdalla as Jerome Sawyer (season 1)
Justin Salinger as Carl Meisner (season 1)
Anthony Welsh as Leo Garner (season 2), a supervisor at The Meadows
Cherrelle Skeete as Terri Miller (season 2), a new transfer
Andy Nyman as Jacobs (season 1)
Rhianne Barreto as Sophie (season 1), Hanna's new friend whose family Hanna meets in Morocco
Yasmin Monet Prince as Girl 249 / Clara Mahan a trainee at the UTRAX facility
Katharina Heyer as Elsa (season 1)
Áine Rose Daly as Girl 242 / Sandy Phillips a trainee at the UTRAX facility
Benno Fürmann as Dieter (season 1)
Stefan Rudolf as Rudi (season 1)
Joanna Kulig as Johanna Petrescu (season 1), Hanna's mother
Gianna Kiehl as Jules Allen (season 2), a trainee at the Meadows facility whom Sandy befriends
Lyndsey Marshal as Rachel (season 1), Sophie's mother
Phaldut Sharma as Tom (season 1), Sophie's father
Peter Ferdinando as Lucas (season 1)
Emma D'Arcy as Sonia Richter (season 2), a new addition to Marissa's Paris office, but she as actually working for Carmichael
Varada Sethu as CIA Analyst McArthur (season 1)
Andrea Deck as Carlsson (season 1)
Ursula Werner as Sara Heller (season 1), Erik Heller's mother
Michelle Duncan as False Marissa (season 1)
Narges Rashidi as Sima (season 1), Dieter's wife
Ellen Evans as Laura - Girl 261
Pia Hagen as Charlie - Girl 228
Severine Howell-Meri as Helen Young
Mia Jenkins as Danielle Marks
Ria Lopez as Nina - Girl 256
Clea Martin as Jessie - Girl 233
Félicien Juttner as Olivier
Giles Norris-Tari as Benoit
Kemaal Deen-Ellis as Jay
David Avery as Stephen Mannion
Mark Bazeley as Robert Gelder
Ike Bennett as Ray
Leonard Rosik as Armin
Leo Farahwaschy as Bijan
Antonio Magro as Larry Robins
Sam C. Wilson as Costigan
Angela Sari as Kat Gelder
Claudia Trujillo as Teresa
Natasha Atherton as Kim
Óscar Casas as Juan
Anna Comet as Metropole Receptionist
Henry Davis as Guard 1
Caitlin Innes Edwards as Grant
Jasmine Breinburg as Girl 217
Dorothy Atkinson as Therapist
Ziad Jallad as Hafeez
Gamba Cole as Anton
Eduardo Lloveras as Bernat
Leo Flanagan as Dan
Antoine Mathieu as Louis Dumont
Osi Okerafor as Utrax Security Officer Jones
Maria Pau Pigem as Spanish Landlady
Károly Mészáros as Dieter's Truck Driver
Ross O'Hennessy as Camp G Guard 2
Katie Clarkson Hill as Joanne McCoy (season 2), a CIA officer
Clarisse Normand as Monica Gastner
Bruno Oro as Lecturer
Gemma Wallace as Sadie - Trainee 219
Claudia Toth as Morgue Attendant
Victor Ade as Guard 3
Luis Angulo as Guy in Opium 2
Marius Bizau as Hotel Receptionist
Antoine Blanquefort as Belgian Police Officer
Noof Ousellam as Agent Turner
Peter Sótonyi as Kid at Quarry
Alex Bhat as Utrax Employee
Jamal Valentin Larry as Kid at Quarry
Matthias Peikert as Policeman in Bar
Ulli Ackermann as Franz
Aleksandr Gorchilin as Arvo
Issah Jacob Larry as Kid at Quarry
Yasmin Mwanza as CIA Female Guard
Ernesto Collado as Raol González
Beatrice Engel as Romanian Mother
Russ Bain as CIA Officer Sanchez
Béla Gábor Lenz as Dealer
Zoltán Vandor Toth as Satellite Security Man
Viet Hung Vu as Kid at Quarry
Georgia Goodman as Suited Woman at Trial
Zsombor Burger as Kid at Quarry
Tom Mothersdale as Head of Ops
Leonie Parusel as Newscaster
Alvar Goetze as German Boy
Belén Fabra as Marta Ferrán
Noham Hedjem as Felix
Gyula Benedek as Romanian Truck Driver
Steve Howard as Utrax Officer 1
Gary Finan as US Military Officer
Daniel Teleky Toth as CIA Monitor
Laura Martuscelli as Tutor
Alexandra Szucs as CIA Officer
Sándor Bencze as Romanian Police
Raphael Fülöp as Policeman One
Klara Low as Military Doctor 1
Valene Kane as Nicola Gough
Pedro Leandro as Jamal
Tasiana Mevong as Samira Elouassi
Lukas Johne as Policeman Two
Timothy Knightley as Examining Officer
Mia Moon as Tour Party Leader
Anna Devlin as Gina
Benjamin Stoll as Army Patrol One
Stephen Lee as Camp G Guard
Michael Epp as Military Attache
Reece Lyons as Pearl
Victor Rebull as Guy in Opium 1
Simon Cotton as CIA Officer Carter
Adrián Lòpez as Port Security Officer
Faisal Mohammed as Utrax Driver
Adesuwa Oni as Guard 4
Clara Segura as Alba Paredes
Theresa Sophie Albert as Hotel Concierge
Botond Csillag as German Check-In
Karen Gagnon as Utrax Nurse
Derek Horsham as Sawyer's Agent
Paddy Rowan as Young Guard
Gary Anthony Stennette as Utrax Man
Kristen Alminta as Utrax Guard
James Backway as Waiter
Laila Mnii as Trial Admin Assistant 2
Cosmina Salomia as Romanian Girl
Skandar Amini as Kurdish Boy
Hannah Boyde as Family Mother
Gabi Ferencz as Hotel Receptionist
Ágnes Krasznahorkai as Dieter's Neighbour
Archie Renaux as Feliciano
Ellie Piercy as Bethany McGovern
Jérôme Soufflet as Alain
Mariona Tena as Admin Woman
Wayne Brett as Doorman
Gertrude Thoma as German Hostel Receptionist
Péter Fancsikai as Concierge
Loretta Massé as Family Kid
Juri Padel as Barman
Nico Pimparé as Trial Admin Assistant 1
Heather Coombs as Speaker
Alex Frost as Immigration Officer
Aleksandar Mikic as Emil Prodna
Martin Stange as Policeman at Hotel
Lucy Aarden as Assistant
Cristina Catalina as Maria Prodna
Colin Stinton as Tom Kaladski
Martin Bergmann as Policeman in Van
Audry Marodi as Emil's Child
Sonnyboy Skelton as Kid at Conference
Aimee Barrett as Hotel Staff
Roland Csikkel as Emil's Child
Leander Vyvey as Vandervelde
Declan Hannigan as Hotel Staff Two
Jill Winternitz as Rachel
The average duration of each episode is 47 - 55 minutes. Country of origin: United States. Original language: English.