The resistance force on the Hork-Bajir homeworld has long been wiped out. Now the Hork-Bajir colony on earth could help to start the fight again. But only a dead Andalite knows where to find the weapons cache that they'll need to destroy the Yeerks...But the dead CAN live again. The Andalite's Ixcila - her personality - has been stored. But like a Yeerk, it needs a host body to inhabit. One of the Animorphs has to let her into their head. Who will it be? And will the dead Andalite girl ever want to let her new body go?