(S04E15) "I don't like a guy who thinks a purple heart gives him a free pass." - Colby

Well there's something you don't see too often on Numb3rs - resurrecting an old case from a previous episode. Usually, this show is pretty self-contained. Each week it's a wrap. Despite the fact that the last time we saw Clay Porter was when he escaped, his story still felt finished. But the writers took one small detail about his past and turned it into a pretty solid episode.