Episode 4

S1 E4: Their investigation now complete, Timmons's team submit their file to the Crown Prosecution Service, which charges Lugovoy and Kovtun with Litvinenko's murder. However, as the killers are safe in Russia and protected by Putin, the chances for true justice appear to be slim. With the encouragement and financial backing of Russian dissident Boris Berezovsky, Marina hires Ben Emmerson, a charismatic human rights barrister, to push for an inquest into her husband's murder.