His yells aren't loud enough to attract attention from anyone but Grace -- "he's in trouble! Those aren't his usual cries of anguish!" -- and she comes to the turn, and starts screeching when she sees Warren dead on the floor. We get a little glimpse of his flattened body, but we have to wait until after the opening credits for the full effect.
It's now dark outside, ninety minutes later, as Broyles leads the Fringe team into the quarantine zone. He tells them about Dr. Warren Blake, a scientist working in the company's R&D Department. "The victim's reaction doesn't match any known biological or chemical weapon," says Broyles.
Walter's utterly confused: "But why would anyone kill a scientist? What did we ever do?" Fortunately for Walter, the only reaction he gets is from a wry Peter, who simply says "Really?" Olivia, whom Walter conducted experiments on when she was a child, says nothing.
Inside, the team wears badass-looking red Hazmat suits as they pick their way through the remnants of the worst office birthday party ever. Walter crouches down by the body, just a shapeless mass of flesh and clothes. "I feel nauseated," he says, but not because of the body, but because he farted inside his suit. Always nice to have Walter along! He examines the body, and notes that there doesn't seem to be a single bone left in, and he notices a blue substance on his face that Blake must have inhaled.
This is one of those incredibly horrifying products that Walter seems to wish he'd thought up: "Ingenious. It destroyed bone matter but was nonreactive with everything else. The work of a highly proficient chemist, no doubt," he says. Meanwhile, Peter's found the doll delivery system, and he pulls the tab and spews MORE of this incredibly toxic stuff into the air, and he gives the killer "bonus points for the creepy factor." In the box the doll came in, Olivia finds a card that says "Happy Birthday from Madison." There's no return address on the box, but Olivia's looking at it thoughtfully, until Peter asks her what she's thinking. "That this is too big to go in a mail drop," she says.