UPDATE: Alexander Litvinenko & the Polonium Plot

In the concluding episode of Season 2, we look once again at the case of Alexander Litvinenko, the exiled former Russian government security officer cum MI6 asset. Living in London, he was poisoned in 2006— seemingly by Russian agents. We take a closer look at the wealth of evidence amassed by a British inquiry into his death, and we also consider just how impartial that inquiry was.