Book 2 of the "Janie" trilogy, of which the other books are "The face on the milk carton" and "The voice on the radio".
First published: U.S.A.: Bantam Doubleday Dell Books for Young Readers, 1993.
Whatever happened to Janie? by Caroline B. Cooney. ISBN 0749717467. Published by Mammoth in 1996. Publication and catalogue information, links to buy online and reader comments.