IGN - The long wait is over! Devoted Fringe fans were finally rewarded with the return of Peter Bishop. But in some ways Peter's return takes a backseat to some excellent character building.
A really strange (but awesome!) opening sets the tone for the rest of the episode as a spooky apparition wakes Olivia from slumber. The first seven minutes (yes, I timed it) are chock-full of amazing scenes with great pacing and I was hooked from the start. The investigation into the strange phenomenon leads us in surprising directions, but it was really the character moments that carried this episode.