In a large country house in Derbyshire in April 1809 sit Lady Thomasina Coverly, aged thirteen, and her tutor, Septimus Hodge. Through the window may be seen some of the '500 acres inclusive of lake' where Capability Brown's idealized landscape is about to give way to the 'picturesque' Gothic style: 'everything but vampires', as the garden historian Hannah Jarvis remarks in the same room 180 years later to Bernard Nightingale - who has arrived to uncover the scandal said to have taken place when Lord Byron stayed at Sidley Park.Tom Stoppard's absorbing play takes us back and forth between the centuries and explores the nature of truth and time, the difference between the Classical and the Romantic temperament, and the disruptive influence of sex on our orbits in life - 'the attraction which Newton left out'.