Book 12

Agent Arthur's Arctic Adventure

by M Oliver and Martin Oliver

Published 1 September 1990
Each book in this series contains an adventure story packed with entertaining puzzles to solve. There are extra clues to help you if you get stuck along the way and answers at the back of each book.

Search for the Sunken City

by M Oliver

Published 30 December 1999

Agent Arthur on the Stormy Seas

by Martin Oliver

Published 31 December 1995
Action-packed stories of mystery and adventure interwoven with puzzles to solve


Intergalactic Bus Trip

by M Oliver

Published 1 May 1988