Flashback to Marcus lecturing Rosen (clean-shaven then, too) over an outdoor chessboard in a park. Discussion of the game quickly leads to Rosen trying to disabuse Marcus of his persistent delusion that everything in the universe has intent. "Sometimes it's a flip of the coin," Rosen says, tossing a quarter on the table. Marcus insists that the universe isn't random; saying that his status as Rosen's patient is a cause and effect chain leading all the way back to his roommates pissing him off. Rosen says nobody else could possibly see it that way, and the fact that Marcus can makes him special -- like the people Rosen is calling Alphas. Marcus likes that name, taken from the first variable, acceleration. Which I thought was delta-v, but I'm just an ignorant recapper. Rosen asks if Marcus can do anything out of the ordinary (like that's not already clear), and Marcus holds up Rosen's hand to catch a dry leaf that was blowing high overhead a minute ago.
In the present day, Rosen returns to that same outdoor chessboard -- on which is sitting a single dry leaf. Marcus' mastery of seemingly unpredictable variables is such that it hasn't even blown away. But under the leaf is a coin. Rosen looks around nervously, but he's not an Alpha, so sucks to be him.
While Rachel and Nina are leaving the office, Rachel's apparently having another cell phone argument with her mom about some guy she's not marrying. After hanging up, Rachel thinks Nina would have handled it better, but Nina sys she hasn't talked to her mom in years, so there. A minute later, she's in a red Mercedes convertible and pulls up next to Cameron while he's walking down the sidewalk. She tires to buck him up too, with similar success. "Nice car," he says. "I borrowed it," she says as she drives off. Can't she just order her coworkers to be happier?
Next morning, a suited brunette (played by Zee from Off the Map) comes in looking for Rosen, and Bill rudely interrupts her with some snotty comments about how Rosen has some "game." She recognizes Bill, probably from an official description of his being tall, dark, and prickish, and declines to shake hands so as not to get hers broken. She also greets Rachel and Nina by name, and Rosen makes another late entrance. "Your cell phone is encrypted," Gary complains. "That's right, Gary, it is," she says. Rosen explains that the new arrival, Agent Sullivan, is the temporary replacement for Don Wilson, because apparently they couldn't get Callum Keith Rennie beyond the pilot either. And she wants to talk to Rosen privately before they all have their meeting.