In August 2020, a plane travelling from Siberia to Moscow made an emergency landing.
One of its passengers, Russian opposition leader Alexei Navalny, was deathly ill. Taken to a local Siberian hospital and eventually evacuated to Berlin, doctors there confirmed that he had been poisoned with Novichok, a nerve agent implicated in attacks on other opponents of the Russian government.
President Vladimir Putin immediately cast doubt on the findings and denied any involvement. While recovering, Navalny and his team unravel the plot against him, finding evidence of the Kremlin’s involvement, and prepare to go public with their findings.
Navalny airs Monday 25th April at 9pm on BBC Two.