But Antony Sher plays the usurped Duke Altofronto, returned to court in disguise as a licensed, foul-mouthed jester, Malevole, with an alien, pantomimic crudity. In lank, long hair and stained T-shirt, with stooping, crab-like walk and nasal voice, Sir Antony renders Malevole's serious anger gross. He whips off his wig to reveal the real Duke and quavers in artificial self-pity. It's Claire Benedict as a conniving court bawd, Amanda Drew's voluptuous, but tormented Duchess and Geoffrey Freshwater's court buffoon who, Dixon apart, best catch the right tone for this weirdly enthralling drama.