This was such an entertaining episode! The romances for practically everyone including the Numbers with Reese as the odd man out was great! And while this episode was a complete stand alone it was very well done, and in perfct POI style managed to be funny, serious and action-packed all at once.
The Numbers were an interesting twist. I really like it when I'm surprised and can't predict the ending from the first ten minutes of a show. Well done, POI!
I really liked the touch of whimsy and human warmth that showing the budding relationships brought to POI. Although with Finch, it was very bittersweet to get those flashback of how much he loved Grace then to turn around and see how much he was hurting. Owwie. I made my heart break a bit for Finch. It also made me very worried for Grace. Considering Root is out there, now I'm wondering if Grace will end up a Number soon. Ack. She better not end up fridged.