A Shadow Of Myself (Shadow Saga Series, Book 3)
Shadow survives the fall from the ARK, but has lost his memories in the process. After being put in stasis a second time by Eggman, he is found prematurely by Rouge the Bat, and a new team is formed as a journey to find and question the "good doctor" begins. Is Shadow the same person as the one Rouge knows? Or is he just a copy of the real Shadow? And what's going on with the strange things Eggman has been saying?