The listed episodes on NBC are not how they originally aired it. Originally shown as 2 seasons and then cancelled, the network announced that there would be a 2 hour finale, this was shown in December as 2 back to back episodes (11 and 12). Then they reorganized the second season on their official online service by combining original episodes 9 and 10 into a new episode 9 and combining the two finale episodes into a new episode 10. I can't find any official citations for this, the DVD indicates 10 episodes but I'm not sure whether that is the original 10 episodes or the revised organisation. How this may affect what is listed on here, I don't know.