So the Fringe folk and the SWAT team enter the darkened lab, and maybe someone can explain to me why it's a good idea that the infected Lincoln go along, and why it's a good idea for them to go radio-silent just because the power has been shut off?

At least the lights-out gives us the chance to watch what's going on in night-vision, and the agents have those cool red pinpoint laser sights sweeping around all over the place, even if we can see the monster moving around before they can.

Back at the Harvard lab, Walter comes out of the bathroom, clutching his 20-year-old copy of Hump magazine, and the less said about that the better. He's suitably chagrined to see Olivia standing there, but she's probably too worried about the raid to appear outwardly grossed out.

Walter heads over to the chess game that he's got going on with Lincoln, hoping to ease the tension he's feeling. Shouldn't his bathroom time with Miss Hump 1992 have helped with that? He starts crowing when he recognizes that Lincoln is using the sleeping-Indian defense: "He saw my rook about to take his queen, and he countered with his knight."

Hearing "knight" makes Olivia think of "night" and she remembers Walter talking about how porcupines are nocturnal -- not to mention BATS, geez -- and she tells Astrid to get Lincoln on the radio. WHICH IS OF COURSE TURNED OFF. He -- having not learned his lesson -- is by himself, when he finds some ripped-up medical waste bags. And we can see the creature in the shadows in the room behind him, and maybe someone should tell Lincoln that the night-vision goggles aren't helpful if you're not going to LOOK AROUND THE ROOM.

So Olivia calls Peter on his cellphone. Hey, if they had to turn off the radios, shouldn't Peter at the very least have put his phone on airplane mode?

Anyway, she tells him that they should turn on all the lights, because the creature is likely sensitive to it.

The lights don't come on quick enough to prevent Porcupine Man from knocking Lincoln to the floor again, but they do come up just as it's about to finish Lincoln off. The creature is blinded and disoriented, and starts howling. Lincoln -- who has his night-vision goggles on -- is likewise discombobulated, but still manages to fire off a few rounds that hit the creature in the chest, and it staggers backwards and falls to the floor.