In a soundstage on a particularly desolate patch of Long Island, Allison Williams is dangling in the dark from a 25-foot harness. The "Girls" star floats stealthily above a brightly lighted bedroom where a make-believe family belts out the "Peter Pan" song "Tender Shepherd."
Then, just as the children finish singing and a quiet settles on the room, the bedroom windows swing open and Williams swings and swoops into the scene, landing cat-like on the floor.
"Everyone here is working toward the same goals," Williams says a moment later, slipping off the harness and zipping up a winter coat. "It's just that our enemy is physics."