Wodehouse with an element of science-fiction and a switch of identities in a dentist’s surgery following a misadventure with the eponymous laughing gas, all of which leaves a young Hollywood brat’s body being taken by a toff from The Drones and vice versa. These misfiring figures are then let loose in a familiar world of fearsome aunt-like-authority figures, drunken bounders, clumsy toughs, sly gardeners and plot twists which trip, delightfully, one into the other. The Hollywood setting allows a few pokes at a different society, although despite this, and despite a lack of Wodehouse A-list characters, this is all wonderfully, sublimely familiar.