See raamat on justkui mäng, lugemise ajal peab ise kaartidel olevaid juhtnööre harutama.

It stars Amy and Dan Cahill, two orphans who discover, upon their grandmother Grace's death, that they are part of the powerful Cahill family, whose members constantly fight each other for Clues, which are ingredients to a mysterious serum. The novel has received generally positive reviews.