The determined Scotland Yard officers work to find the person responsible for the death of Alexander Litvinenko, which turns out to be one of the most complex and dangerous investigations in the history of the Metropolitan Police.
EPISODE 1
Episode 1
Detective Inspector Brent Hyatt and Detective Sergeant Chris Hoar, are summoned to University College Hospital in Central London to interview a patient with an extraordinary story to tell.
EPISODE 2
Episode 2
The day after Litvinenko's death, radiation teams swarm across London to secure potentially contaminated sites visited by the Russian spy.
EPISODE 3
Episode 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.
EPISODE 4
Episode 4
With their investigation complete, Timmons' team submit their file to the Crown Prosecution Service, who charge Lugovoy and Kovtun with Litvinenko's murder.
David Tennant
Margarita Levieva
Mark Bonnar
Neil Maskell
Barry Sloane
Daniel Ryan
Richard Pepper
Jim Field Smith
Chris May
George Kay
