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 1 of 4 

Drama

Crime

David Tennant portrays Alexander Litvinenko, the former Russian Federal Security Services and KGB officer, whose death from Polonium-210 poisoning in November 2006 triggered one of the most complex and dangerous investigations in the history of the Metropolitan Police.

Litvinenko

Series 1

David Tennant portrays Alexander Litvinenko, the former Russian KGB officer.

The day after Litvinenkos death, radiation teams swarm across London to secure potentially contaminated sites visited by the Russian spy.

Episode 2 of 4 

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 Litvinenkos murder.

Episode 3 of 4

With their investigation complete, Timmons team submit their file to the Crown Prosecution Service, who charge Lugovoy and Kovtun with Litvinenkos murder.