In this gripping adventure packed with mystery, danger and ancient magic, twins Jemima and Joe Lancelot, their best friend Charlie and remarkable cat Max, find themselves in the scorching Rub' Al Khali desert, also known as the Empty Quarter. Legends speak of a lost city buried beneath the sands, but it holds a dark secret.Can the young time-travellers unlock the truth before it's too late or will the desert's secrets remain hidden forever?
