Walter and Peter examine the bodies, with Walter noting the swelling of the vitreous humour (that's eye jelly, gross) and petchial hemorrhaging, and Peter noting the blue skin. It's definitely asphyxiation, they conclude. However: the airways are clear, and there's no fluid in the lungs. Fringe notes that all the victims she's identified so far are on the groom's side, and suggests they all came in contact with something before the wedding -- anaphylactic shock. "Maybe they're all having an allergic reaction to something they ate or drank," suggests Peter, and Walter grudgingly admits that's a logical idea, if they were all exposed at the same time, and he's probably just pissed that he hasn't come up with a theory yet that involves psychic bonding or parallel universes yet or something. Fringe spots a row of numbers on Nana's arm. "She was a holocaust survivor," she says. Walter comes over to examine the body and laments how she survived the Holocaust only to finish up like this, which is true, although there was sixty-five years in the interim which she probably cherished every day, Walter. Fringe asks Walter if this could be a deliberate attack, and he doesn't know. He just knows that "fourteen people suffocated in a room full of air."
Peter and Fringe check out the study the groomsmen were getting ready in, looking for something they all ate or drank. Peter naturally spots the whisky bottle right off, while Fringe notes, "It's hard to believe that a few hours ago this was actually a happy place."