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Olivia and William Bell rescue Walter from the hospital. Then Olivia meets her double, who is a dangerous woman, trying to find Peter; however they fight but Olivia subdues her. Olivia poses of her double to lure Charlie and convinces Peter to return. Meanwhile Walter and William bring a piece of equipment from Walter's laboratory in Harvard to the theater to let them return to their universe. However, the FBI and the Fringe Division also arrive and there is a shootout. Will Olivia, Walter, Peter and William Bell return to their universe?