Find the clues in the photographs for these three mysteries: Whatever happened to Porfessor Potts?, Who stole the black diamond? and Where is the pirates treasure?

In order to discover who murdered the man in seat number thirteen, the reader must solve a series of puzzles.

Readers follow a trail of clues on each page in an attempt to find Professor Potts, who is missing. Includes helpful hints and answers at the back of the book.

This combined volume contains three titles from the Usborne Puzzle Adventures series: The Incredible Dinosaur Expedition, The Intergalactic Bus Trip and Time Train to Ancient Rome.

MYSTERY MANSION IS A PLACE OF DARK SECRETS AND TERRIFYING NIGHTMARES. HARRY THE BOOT BOY TRIES TO IGNORE THEM ALL AND GET ON WITH HIS JOB UNTIL HE FINDS HIMSELF CAUGHT UP IN AN ADVENTURE MORE SCARY THAN ANY NIGHTMARE.

An illustrated encyclopedia for children which covers such topics as science, history, technology, geography, and world records.

Find the clues in the photographs for these three mysteries: Whatever happened to Porfessor Potts?, Who stole the black diamond? and Where is the pirates treasure?