Episode 2

Summary

Radiation teams swarm across London in a rush to secure potentially contaminated sites visited by the Russian spy.

Guest stars

• Marcus Onilude as Aidan
• Sam Troughton as DI Brian Tarpey
• Estella Daniels as Dr. Onome George
• Dan Renton Skinner as James Cairns
• Nikolai Tsankov as Boris Berezovsky
• David Tennant as Alexander Litvinenko
• Sarah Naudi as Dr. Justine Adams
• Ian Conningham as Dr. Nick Gent
• Maggie Evans as Professor Pat Troop
• Edward Baker-Duly as Martin Svensson