This episode in my opinion is the best episode of Numb3rs to date. While there have been many good episodes of this show none has held my interest and is so well written as this one. Just when you thought you had it all figured out a turn that you didn't see coming (and is very plausible) comes to light. The backstory of Charlie's quarrels with his father actually added to the enjoyment of the episode. It worked on every level and didn't get in the way of the main story. A great episode for sure.