Who controls a professional athlete's body? In the wake of the ACC report findings, Insight discusses allegations of the use of performance enhancing drugs in Australian professional sports, and asks: who should ultimately be held accountable? Insight looks at the lengths athletes are expected to go to in order to get an edge, with some suggesting that they are not always given a choice. David Parkin, former AFL coach, breaks his silence on the doping scandal, revealing that during his time working for different clubs, "we’ve got rid of people" there were suspicions around. David says, "we weren’t prepared to take a risk that there might be somebody in the place that wasn’t operating all above board." He says sports scientists have become increasingly influential in clubs and believes the pressure for coaches to get an edge over their competitors means everyone is tempted to bend the rules. This week, former football players, coaches, cyclists, and current sports scientists speak up about whom athletes can really trust.