Animorphs : Megamorphs, tome 4
Katherine A. Applegate2000

Jake's finally weakened. After a grisly battle, the Drode offers the Animorphs' leader an escape from the terrifying pressure. He'll reverse the decision to start the Animorphs. Now, there's no morphing, no missions, and no knowledge of the Yeerks. That is, until very strange things begin to happen and Jake, Rachel, Tobias, Cassie, Marco and Ax are forced to confront their new reality.

Titre original : Back to Before (2000)