Richard Dormer
Dan Anderssen (25 eps)
Sienna Guillory
Natalie Yelburton (25 eps)
Mia Jexen
Officer Ingrid Witry (25 eps)
Sofie Gråbøl
Governor Odegard (25 eps)
Luke Treadaway
Vincent Rattrey (25 eps)
Darren Boyd
Markus Huseklepp (25 eps)
Björn Hlynur Haraldsson
Officer Eric Odegard (25 eps)
Alexandra Moen
Officer Petra Bergen (25 eps)
Verónica Echegui
Elena Ledesma (21 eps)
Dennis Quaid
Michael Lennox (14 eps)
Stanley Tucci
DCI Morton (11 eps)
Michael Gambon
Henry Tyson (11 eps)
Johnny Harris
Ronnie Morgan (11 eps)
Nicholas Pinnock
Frank Sutter (11 eps)
Jessica Raine
Jules Sutter (11 eps)
Phoebe Nicholls
Doctor Allerdyce (11 eps)
Aaron McCusker
Jason Donnelly (11 eps)
Chipo Chung
Trish Stoddart (11 eps)
Michael Obiora
Max Cordero (11 eps)
Leanne Best
Celia Donnelly (11 eps)
Lorcan Cranitch
DI Littlejohn (11 eps)
Jessica Gunning
Shirley Allerdyce (11 eps)
Jonjo O'Neill
Ciaran Donnelly (11 eps)
Ramon Tikaram
Tavrani (11 eps)
Emil Hostina
Yuri Lubimov (11 eps)
Michelle Fairley
Freya Lennox (10 eps)
Parminder Nagra
Dr. Sarinda Khatri (10 eps)
Robert Sheehan
Vladek Klimov (10 eps)
Ken Stott
Erling Munk (10 eps)
Eloise Smyth
Yeva Podnikov (10 eps)
Rune Temte
Lars Ulvinaune (9 eps)
Abubakar Salim
Boyd Mulvihill (3 eps)
Alfrun Rose
Liv Nygaard (1 eps)
Lewin Lloyd
Petter Hansen (1 eps)
Aliette Opheim
Elsa Schenthal (1 eps)