Follow twelve-year-old Sim's time travel adventure in Ancient Rome in The Impossible Gladiator, the third title in Time Keys, a bestselling spectacular, action-packed mystery series by multi-award-winning author M. G. Leonard.'A complete triumph of imagination . . . readers are going to fall in love with this brilliant series' — A. F. Steadman, bestselling author of Skandar'A captivating adventure loaded with history and intrigue' – Abi Elphinstone''A cracking series with stunning illustrations' – Christopher Edge, bestselling author of Escape RoomThe action adventure of Gladiator meets the time travel of Doctor Who in the third title of this epic series by bestselling award-winner M. G. Leonard. Perfect for 8 to 12-year-old fans of Adventures on Trains. Supports the curriculum. Illustrated throughout in black and white by Manuel Šumberac.Sim, Jeopardy and Nelson are enjoying an amazing holiday in Rome, until they they are swept up in the mysterious disappearance of world-famous illusi