New Recruits - S5-E2
Factual error: The contract Stone and his team force Carlton Wood and Harry Fielding to sign guaranteeing Fowler's widow the royalties from his invention for life is signed under duress and is therefore invalid. It is hard to believe that none of Stone's team know this, but it is impossible to believe that Carlton Wood wouldn't.
New Recruits - S5-E2
Factual error: Knocking out fit, healthy adults by pumping an anaesthetic gas into a large, open room in which they are sitting is an incredibly stupid and dangerous thing to do. In order to do so, you'd have to know everything about them - age, weight, medical history, and so on. Killing them? Easy. Use cyanide gas. Knocking them out for a few hours? Impossible. Incidentally, why is it that the next morning when the grifters reveal their plan, nobody talks to the guards about what happened?