GLUMCI
- Mark Bonnar
DSupt Clive Timmons - Margarita Levieva
Marina Litvinenko - Richard Pepper
DCI Duncan Ball - Temirlan Blaev
Young Anatoly Litvinenko - Mark Ivanir
Alexander Goldfarb - Neil Maskell
DI Brent Hyatt - Barry Sloane
DS Jim Dawson - Kayla Meikle
DC Deborah Maxwell - Daniel Ryan
DAC Peter Clarke - Kirsten Foster
Jenny Hyatt - Marcus Onilude
Aidan - Sam Troughton
DI Brian Tarpey - Estella Daniels
Dr. Onome George - Dan Renton Skinner
James Cairns - Nikolai Tsankov
Boris Berezovsky - David Tennant
Alexander Litvinenko - Sarah Naudi
Dr. Justine Adams - Ian Conningham
Dr. Nick Gent - Maggie Evans
Professor Pat Troop - Edward Baker-Duly
Martin Svensson - Aleksandar Mikić
Dmitry Kovtun - Radoslaw Kaim
Andrey Lugovoy - Greg Kolpakchi
Oscar Enrique - Simon Haines
Dr. Benjamin Swift - Simon Paisley Day
Sir John Scarlett - Sam Marks
DC Oliver Gadney - Robert Meadmore
Professor John Henry - Daniel Paton
Russian Driver - Selina Cadell
Louise Christiansen - Bea Svistunenko
Nina Tupper