An adaptation of P.G. Wodehouse must convey not only the dialogue but the narration's mock-serious tone, a perfectly balanced mix of ironic detachment, exaggeration, and understatement. And Page Hearn's faithful, playful version of Pigs Have Wings manages to find room for the authorial voice--characters deliver the narration--and thus most of the book's best lines. But the actors in director Martha Adrienne's production undo his good work with their rather unhinged, verging on shrill, performances. Chaos reigns at City Lit's Blandings Castle, and this show's humor is the blown-gasket variety of farce. A depiction of Wodehouse's world should be a lot cozier and more controlled, a combination of the gentle absurdity found in children's literature and the merry wordplay of a joke teller who happens to have complete mastery of his language. Through 6/12: Thu-Sat 8 PM, Sun 3 PM. City Lit Theater Company, Edgewater Presbyterian Church, 1020 W. Bryn Mawr, 773-293-3682. $18-$25.