'A complete triumph of imagination . . . readers are going to fall in love with this brilliant series.' – A. F. Steadman, bestselling author of Skandar

Action adventure meets the time travel of Doctor Who in the second title of this epic series by bestselling award-winner M. G. Leonard. Perfect for fans of Adventures on Trains.

Supports the key stage 2 curriculum. Illustrated throughout in black and white by Manuel Šumberac.

Sim's Uncle Emmett is missing and on the run from the ruthless Council of Keys. Sim and his cousin Jeopardy are determined to find him. Their search takes them through a hidden door in time to Viking Norway and a desperate mission across land and sea to stop the legendary Gjallarhorn – said to herald Ragnarök, the end of the world – from falling into the wrong hands.

The Legend of Viking Thunder can be read as a stand-alone novel, or enjoyed as part of the thrilling Time Keys series. Follow Sim and Jeopardy's adventures in the series in Hunt for the Golden Scarab and The Impossible Gladiator.

Praise for the series:
'Classic and fresh – a breathtaking adventure.' – Eoin Colfer, bestselling author of Artemis Fowl

'A spellbinding, seat-of-the-pants adventure . . . fabulous, fast-paced and thrilling.' – Jonathan Stroud

'A note-perfect, time-travelling blockbuster.' – Jack Meggitt-Phillips, bestselling author of The Beast and the Bethany

About the Author

M. G. Leonard has made up stories since she was a little girl, but back then adults called them lies or tall tales and she didn’t write them down.

As a grown up, she has written stories about fantastical beetles, beautiful birds and thrilling train rides.

Her books have been translated into over forty languages and won many awards.

She is the vice president of the insect charity Buglife, and a founding author of Authors4Oceans.

She lives in England, by the sea, with her husband, two sons, a dog called Nell, and a variety of exotic beetles. She is the bestselling writer of children’s books such as The Time Keys series, The Ice Children, Beetle Boy, the Adventures on Trains series and The Twitchers books.