Most relevant documentaries by Hajo Seppelt and his colleagues:
2018 „Doping Top Secret: Traitors. Fallout from the Russian Doping Scandal.“
2018 „Doping Top Secret: Brazil‘s Twelfth Man“
2018 „Doping Top Secret: Russia‘s Football Friends“
2018 „Doping Top Secret: Olympic Conspiracy“ (in two parts)
2017 „Doping Top Secret: The Big Money Run – Africa’s Athletes on Sale“
2017 „Doping Top Secret: Brazil‘s Dirty Game“
2017 „Doping Top Secret: Jamaica‘s Sprinters and Clenbuterol“
2017 „Doping Top Secret: New Russian Whistleblower“
2016 „Doping Top Secret: The Protection Racket“
2016 „Doping Top Secret: Showdown for Russia“
2016 „Doping Top Secret: A British Doping Doctor and his ties to footballers“
2016 „Doping Top Secret: Russia‘s Red Herrings“
2015 „Doping Top Secret: The Shadowy world of Athletics“
2014 „Doping Top Secret: How Russia Makes its Winners“
2013 Documentary about Thomas Bach, the German candidate for the IOC presidency
2012 „Doping Top Secret: Kenya – No Wonder“ (several short documentaries on doping in Kenyan athletics)
2012 „Doping Top Secret: Blood Treatments for German Athletes“
2011 Documentary about sports in North Korea
2010 „Doping Top Secret: Alberto Contador and the Cover Up of a Positive Test“
2010 „Doping Top Secret: Ice-cold Cheating“
2009 „Doping Top Secret: The String-Pullers in Athletics“
2008 „Doping Top Secret: Flying High in the Middle Kingdom: Doping in China“
2007 „Doping Top Secret: Mission Clean Sport – Doping controls in Germany“
2006 „Doping Top Secret: Cheating in Cycling“ (several short documentaries on doping in cycling with support of doctors in Spain and Germany)
2002 Documentary „Doping – A dangerous Game“
1997 Documentary „State Secret: Doping of Children“ about victims and offenders in East German swimming
1992 Documentary „The Millenium Games“ about Berlin‘s bid for the 2000 Olympics