I don't know how he thought he was going to pull the wool over my eyes for long! I know his methods and his mannerisms--I know the way he thinks and plots and ooohh but I know his intentions.
So the question became: what on earth was the Master doing there in medieval England, three months away from Magna Carta, and with a King John impersonator who just happened to have showed up with a Frenchman champion. It was fairly simple to break the plot down.