This week’s episode of Twin Peaks: The Return uses Mark Frost and David Lynch’s abiding preoccupation with doppelgangers and mirror imagery as an often subtle structural device. Take Hawk’s (Michael Horse) fleeting mention of Jacques Renault (played in the original series by Walter Olkewicz) during his conversation with Sheriff Frank Truman (Robert Forster) about the handwritten pages he found in the bathroom stall door. This brief reference is later echoed by our introduction to Jean Michel Renault (also Olkewicz), the French-Canadian clan’s next generation of sleazy bartender-cum-pimp. Lynch uses a couple of classic rock instrumentals to link scenes set in the wee hours of the night: Booker T. & the M.G.’s “Green Onions” incongruously accompanies the image of a man (reduced almost to a silhouette) sweeping the floor of the Bang Bang Bar, a shot Lynch holds until it becomes strangely hilarious. Set to Santo & Johnny’s aptly titled “Sleep Walk,” the end credits scroll over the late-night patrons of the Double R Diner, only the second time the new series hasn’t concluded with an on-stage performance.