Series
Summary
Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues -- thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. They think they've done everything right, but a tiny mistake leads to catastrophe. The serum i... Full description
Reviews by Goodreads
Goodreads is the largest social network for readers. Members provide ratings and reviews of books to express their personal opinions and to help others determine if they would enjoy a book. Goodreads respects the right of individuals to express themselves, but does not tolerate abusive behavior.