In a new investigation by the Al Jazeera Investigates team, Liam Collins, a retired Great British Athlete, spent six months undercover investigating the murky world of performance-enhancing drugs – what athletes refer to as “the dark side”. The motion graphics formed an integral part of the production enabling the team to feature sports action which was painted by hand and also ‘sporting trading cards’ were created to highlight the alleged athletes named in the film. The full film can be viewed on YouTube here Al Jazeera Investigates – The Dark Side .