It's the day before The Ashes Test at Lord's Cricket Ground, and the Urn's been stolen ... Tess Walker is having the most amazing day at Lord's meeting the two Ashes captains and touring the famous Pavilion, especially as her best friend, Eddie Armstrong, is with her. Everything is perfect until The Ashes Urn is stolen, and Tess knows it's all her fault. She and Eddie must follow the clues around Lord's to catch the thief and clear her name before cricket is ruined forever.