The Impossible Gladiator
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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.
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.
The 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 key stage 2 curriculum. Illustrated throughout in black and white by Manuel Sumberac.
Sim, Jeopardy and Nelson are enjoying an amazing holiday in Rome, until they are swept up in the mysterious disappearance of world-famous illusionist Kinetic. He vanished during a live broadcast from the Colosseum, but he never reappeared. When Kinetic's sister finds a strange description in a history book of a gladiator who sounds uncannily like her brother, the friends are determined to help.
They travel through secret time doors to the spectacular - and deadly - Colosseum in Ancient Rome, but can the brave trio survive long enough to find Kinetic and bring him home?
The Impossible Gladiator can be read as a stand-alone novel, or enjoyed as part of the thrilling Time Keys series written by M. G. Leonard. Follow Sim, Jeopardy and Nelson's adventures in Ancient Egypt in Hunt for the Golden Scarab, and Viking Norway in The Legend of Viking Thunder.
Praise for the Time Keys series:
Classic and fresh - a breathtaking adventure - Eoin Colfer, author of Artemis Fowl
Fabulous, fast-paced and thrilling - Jonathan Stroud, author of the Lockwood & Co. series
A thrilling time-travel adventure - The Guardian
Fast, dramatic, exciting - Hannah Gold
Thrilling adventure packed with history, mystery and action - The Week Junior
Series: Time Keys
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INFORMATION
ISBN: 9781035024377
Publisher: Pan Macmillan
Format: Paperback / softback
Date Published: 12 February 2026
Country: United Kingdom
Imprint: Macmillan Children's Books
Illustration: 40 black and white
Contributors:
- Illustrated by Manuel Sumberac
Audience: Children
DIMENSIONS
Spine width: 19.0mm
Width: 132.0mm
Height: 198.0mm
Weight: 224g
Pages: 272
About the Author
M.G. Leonard has made up stories since she was a little girl but back then people called them fibs or tall tales, so she didn't think to write them down. After a successful career in the music industry and the arts, she finally dared to put pen to paper. Her inventive stories about beetles, birds, and trains are hugely popular. Her books have been translated into over forty languages and won many awards. In this, her most ambitious series yet, M. G. Leonard combines her passion for music, love of history, and instinct for adventure, to bring readers the Time Keys books. Manuel Sumberac is a Croatian based illustrator and animator. He graduated from the Academy of Fine Arts in Zagreb where he was drawn towards the fascinating world of illustration. His work has been published and recognized in numerous book illustrations and covers, including The Dalemark Quartet, Orphans of the Tide, The Night Before Christmas and Steampunk Frankenstein, among many others. Manuel creates his illustrations using digital techniques combined with traditional media.
Also by M. G. Leonard
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