In this thrilling adventure, two friends are trapped in a detective novel and must catch a crook.

Cleo and Evan have a secret. A collection of books so dangerous they are locked up tight. A friend has vanished inside the pages of one of them. It's up to them to find the key that will set her free.

A PRICELESS DIAMOND . . . STOLEN!

When Cleo and Evan go undercover to help a rookie detective interview a mansion full of suspects, nothing is as it seems. They must catch the crook—and find the right key—or they could be trapped inside this mystery forever . . .

Praise for Key Hunters

"Luper's delectable humor is appropriate for the intended age group, and the plot will keep readers' attention to the end . . . [t]his is a satisfying read for beginning independent readers." — School Library Journal