When a contagious, deadly virus appears, Doc Dee and Invisible Six must find its source. The mission takes them into the Rift, a lawless section of the Amazon rain forest. But bandits and wild animals are the least of I-6's worries when the true enemy is invisible, widespread, and can't be beat by typical combat. Can Doc Dee and I-6 locate patient zero and stop a pandemic from happening? Aligned to Common Core Standards and correlated to state standards. Claw is an imprint of Magic Wagon, a division of ABDO.