Series Round-up: The 39 Clues
The 39 Clues is a series of ten adventure books about the will of Grace Cahill. In her will she challenges her potential heirs to search for 39 clues scattered around the world. The winners will inherit her fortune. Siblings Amy and Dan Cahill compete against other Cahills for the prize.
The entire ten books in this series have been published, and the titles are listed below. A new series is being written about the rising of a new family, the Vespers. The transition book between the series will be published in April 2011, with the first book of the new series (Cahills vs. Vespers) arriving in August 2011.
The 39 Clues series (in order):
For even more information, check out the series website: http://www.the39clues.com/