Cahill vs. Vespers

This series continues where The 39 Clues left off. When Amy and Dan manage to unite all 5 of the Cahill family branches. And with the rising of the Vespers closing out the 11 book series of the The 39 Clues.

The authors involved with this spin off are: Gordon Korman, Jude Watson, Peter Lerangis, Roland Smith, Linda Sue Park, David Baldacci

The books in this series are The Medusa Plot, A King's Ransom, The Dead of Night, Shatterproof, Trust No One, and Day Of Doom


This time round the Vespers are managing to stay ahead of Amy and dan. There are members from each member of the Cahill branches.

So Amy and Dan are on a race against the clock to save the people they care about. But with a mole amongst the group of the Cahills doing the Vespers bidding.

But they figure out about the Vespers true plan and race against the clock to stop it.

Amy and Dan and everyone one else in the Cahill group save the world. But at a price.