Visser / Applegate, Katherine. Copyright Paperback Collection (Library of Congress) Science fiction. 355 SCH 2000 Or. On trial for treason, Edriss 562 explains how she infested a series of human hosts in order to spearhead the invasion of Earth by her people, the ruthless, parasitic Yeerks. New York : Scholastic, 2000, c1999. 2000, c1999. Text xiii, 192 p. Animorphs