1Episode 1
Detective Inspector Brent Hyatt and Detective Sergeant Chris Hoar are summoned to University College Hospital in London to interview a patient with an extraordinary story to tell.
2Episode 2
Radiation teams swarm across London in a rush to secure potentially contaminated sites visited by the Russian spy.
3Episode 3
A team of detectives led by Timmons’ ‘best man’ Brian Tarpey arrive in Moscow hoping to interview Lugovoy and Kovtun, now the prime suspects behind Litvinenko’s murder.
4Episode 4
With their investigation complete, Timmons’ team submit their file to the Crown Prosecution Service, who bring charges for Litvinenko’s murder.