Hirsch, Jeff.

The 39 clues : unstoppable: breakaway / Jeff Hirsch. - pages cm - The 39 clues: unstoppable ; 2 .

Now Dan and Amy are facing their greatest threat yet, an enemy who has found a way to use the source of the Cahill family power against them.

ISBN: 9780545521420 (paper over board)

LCCN: 2013942298

Subjects--Topical Terms:
Mystery
Arctic Circle