In season 4 episode 16 of Leverage, the scoobies are attempting to con a brother and sister owners of a scamy Cash for Gold business.
During the later half of the con, a land deal, the brother says "haven't I seen you before?" To Hardison, when Hardison was attempting to portray a lawyer. As mentioned, all the others have "burned" their fake identities up, having played a character in front of the marks earlier. They rarely ever try to play two characters because it's risky.
But in this episode, I don't know where or when the mark might have ever seen Hardison. Did I miss the scene, or was this a deleted or dropped scene from the episode? Is it a continuity error or plot hole?