From the Publisher:
New York City, 2 A.M.: Andy Gulliver is awakened by a phone call from his mother, who says that his twin sister, Annie, is gone. It's not the first time Annie has taken off for parts unknown. Since she was sixteen, she's traveled the world collecting body piercings, Tantric sex practices, and wild stories, returning home on a whim and leaving again just as suddenly. Only this time, it's different: After a troubling incident overseas, a doctor has diagnosed Annie as schizophrenic. For Andy, facing the truth about his twin means looking at himself, his family, their collective secrets, and their shared denial. In a frantic twenty-four-hour search, Andy must find his missing sister while piecing together their entwined past -- before Annie hurts herself or someone else...
Evan Hunter: The Moment She Was Gone. Pocket Books, ISBN: 0743459482 (June, 2003), 304 p., $6.99