Katherine Applegate · 1999 · Novel
Tobias and his friends, a group of young people who have given the power to morph into animals in order to aid the alien Andalites in their battle against the evil Yeerks, face a life-and-death situation when Visser Four, a leader in the Yeerk invasion, finds a time machine.
Source: OpenLibrary
Tags: Science fictionJuvenile fictionMetamorphosisExtraterrestrial beingsFictionChildren's fictionBehavior, fictionFantasy fictionMystery and detective storiesAnimorphs (fictitious characters), fiction
openlibrary_id: OL8115256W
Wikipedia · Amazon · Audible · Google Books · Goodreads · OpenLibrary