After I finished my work project for the day, I watched last night's CASTLE. A good episode and a nifty mystery, but I was not surprised by the assassin's identity, not because of the clue slipped into the script but
because the guilty party didn't bother to give any description at all of the person the police were supposed to meet for the payoff. They went in blind not knowing what he looked like which, for me at least, would not be something I'd let an informer do and give him immunity for. It just didn't make sense unless he didn't want to describe himself.