Slater's performance is a revelation of synthesis. Known for his buoyant athleticism in Broadway's "SpongeBob SquarePants" and his chilling portrayal of the Balladeer and Lee Harvey Oswald in Classic Stage's brilliant "Assassins," he here channels that dexterity into something at once lighter yet more harrowing. His Marceau moves with balletic precision: fingers unfurl like petals; wrists trace invisible architecture…
