Something''s wrong with Tasha--she''s not herself. At least that''s what Amy thinks. And a best friend would know! Tasha''s eyes look glazed. Her usual quick comebacks have become dull, one-word answers. It''s as if Tasha is acting out some part in a horror movie. Only this isn''t a movie, it''s real. One by one, Amy notices other personality changes. Everyone seems possessed! And soon . . . whatever is happening to them may happen to Amy too.