It is the single most important sports story of our time and it reads like a Cold War thriller. The Evening Standard's sports correspondent Matt Majendie tells the whole story from 2012 till now.

Episode 6 shows how Lamine Diack, the boss of world athletics, conspired with the Russian state to protect their doping system. Diack is currently awaiting trial in a French court accused of corrupting the very sport he was sworn to protect.

Bloodsport is the story of the systematic doping of the 2012 and 2014 Olympics by the Russian state, its subsequent unmasking and the ongoing fall out amidst the power play of nation against nation. For the first time, you’ll hear the whole story from 2012 to 2020 told by the people who were there. You’ll hear from Paula Radcliffe and Sebastian Coe on London 2012, you’ll meet the expert German investigator who cracked the case wide open and from athletes who doped. We’ve got access to the elite Swiss lab racing to finish testing London 2012 samples and we’ve spoken to the guy who masterminded doping control at the London games. You’ll also hear first-hand testimony from people who blew the whistle inside Russia (at the risk of their own lives) and from seasoned journalists who watched open-mouthed as the whole thing unfolded. And we’ll take you into the ongoing arms race between doper and tester, to see how the science of testing plays out in the analysis of blood and urine samples. Despite it being eight years ago, the story isn’t over. There are unfinished corruption trials in French Courts and ongoing allegations of flagrant Russian cheating.