Back at the hideout, the crew is playing ... chess? Classy. One of them's saying that he took a look at Loeb's papers while he was checking out whatever was in the box they grabbed: "It's a map of Germany. Frankfurt. Lines all over it." You mean, like on a MAP? "Looks like he's planning a damn invasion." "I got next," says the third guy, who starts to light a cigarette, but Loeb comes in to tell them they're headed out to Providence. Judging from the way the smoker's hands are shaking, it's going to take him at least that long just to light the cigarette.

Back at the bar, Olivia and Peter are trying to impress each other with card-counting and magic tricks, and I hope Drew the bartender doesn't happen to look over and see the brother and sister FLIRTING with each other for God's sake. Peter's pretty amazed by Olivia's card-counting ability, and she says it was all she would do when I was a kid. Well, no freaking WONDER you never had a best friend. "I'm sure that if I were a child today, I would be diagnosed with something. I just have this thing for numbers. I see them once and remember them the rest of my life." She starts rattling off the license plate of her best friend from high school, even though she never HAD a best friend, her locker combination, the numbers of the safe-deposit boxes: 233, 377 and 610. Peter recognizes them, asks to repeat them. She does. "I know those numbers," he says.

So Peter shakes awake Walter who apparently left the lab as soon as Olivia and Peter left and went back to the hotel room to go to bed? As he comes to, he sees Peter and Olivia standing there. "Oh. Do you two want to use the room?" No, it's a brother-sister thing, Walter, don't worry. Peter asks him about the numbers he recites every night to help him fall asleep, and prompts him with 233, 377, 610. Walter keeps it going with 987 and 1,597. "What is that pattern?" asks Peter. "It's the Fibonacci sequence. You should know that, Peter, if you had stayed at college." Olivia tells Walter that not everybody knows the Fibonacci sequence. "Oh, sure they do. It's a wildly famous mathematical sequence." And also a cellphone ring! Walter explains that each number in the sequence is the sum of the two preceding numbers. Peter tells him the safe-deposit boxes that were stolen just happen to have numbers that correspond to the sequence. Walter says it's fascinating, but a coincidence. "It can't possibly be significant, unless..." he says, sitting up, suddenly remembering something. "The safety deposit boxes are mine," he says.