Upstairs, Olivia notices a broom closet with a duster that's flapping slightly in a breeze that shouldn't be there. Apparently the trained FBI guys missed that. The duster's hanging on a false wall, behind which is a door, which leads to the basement... so just how exactly was this breeze getting through? Anyway, it doesn't occur to Olivia or the Bishops that since they've discovered a whole other FLOOR that maybe it should be cleared of toxins or bad guys before they go galumphing downstairs into the basement lab. Peter cracks to Walter that it makes his lab look "downright homey" but Walter's too busy sorting through vials labelled in German in a refrigerated case to notice. And I'd like to point out that at least Hoffman's lab doesn't have a cow shitting in it. Peter notes they're listed with genetic traits: eye colour, hair colour, skin tone. "Creating the master race by process of elimination," says Walter.

Olivia, meanwhile, has found the unused pictures Hoffman was using to make his ID, and a puzzled Peter finds Walter's sweater. Before Walter can confirm it's his, though, he keels over, choking. Only then does Olivia notice the grape Kool-Aid bubbling away on a hot plate, so she knocks it over and yells upstairs for some oxygen. Peter drags his dad upstairs and some FBI agents finally decide to help and get Walter some oxygen.

Meanwhile, Hoffman gets in a lineup behind a bunch of non-white people, so I don't imagine he's too happy about that.

Walter's recovered outside, and Olivia asks him how he's feeling. "You got me out just in time," says Walter, who also would like his sweater back. Olivia wonders why Hoffman would go after Walter, and Walter theorizes that Hoffman knows his father betrayed the Nazis. Olivia, meanwhile, has gotten the picture of Hoffman to Broyles so it can be sent out, and she's also found a plastic badge cover with a faint logo of multicoloured people in a group hug. "I know that logo," says Peter.

Meanwhile, Hoffman is schlepping his box of candles through a security line, and a guard checks the Sterno cans while another passes a security wand over his body. Then he's given the go-ahead, and he takes his box downstairs into the centre, past the big banner with the coloured-people-hugging logo announcing this as the "World Tolerance Initiative"'s annual conference.