While using her photographic memory to find her missing science fair project, Cam accidently locates two valuable gold coins.

"A fourth action-filled puzzler for teen Sherlock as he plunges into a fight for his life and battles to discover what has happened to his missin

Cam and her friend Eric chase the thief of Aunt Katie's wallet through an amusement park and find themselves involved in another case requiring t

A fifth-grader with a photographic memory and her friend Eric help solve the mystery of the stolen diamonds.

Harry's interest in solving mysteries has caught the attention of his classmates in 3B, so he challenges them to discover what he has hidden in a

Cam and her friend Danny help solve the mystery of a stolen pearl necklace when the governor comes to visit their school for the dedication of th

Harry and his detective classmates try to find clues relating to a mysterious locked closet in Room 3B.

A woman is found stabbed to death in London. A young boy is drawn to the scene to investigate the murder and becomes a suspect himself.

After crossing five continents and solving some of history's most perplexing mysteries, Amy and Dan Cahill are nearing the end of their adventure

A clue found in Book 3 sends Amy and Dan jetting off to Egypt to find out what's behind the fierce rivalry between the Tomas and Ekaterina branch

"The race is on to find 39 clues that safeguard a great power, and fourteen-year old Amy Cahill and her younger brother, Dan, are shocked to find

A Clue found in Book 3 sends Amy and Dan jetting off to find out just what's behind the fierce rivalry between the Tomas and Ekaterina branches o