Book Vault's Birthday Contest Riddle

The Book Vault's birthday is drawing ever nearer . . . the last riddle will be posted in just a week, on August 28th. So celebrate while you can!

This is the next leg of The Book Vault’s birthday book riddle contest! For more information on the contest, go here: http://the-book-vault.blogspot.com/2008/08/birthday-contest.html
Each correct answer counts as an entry into the drawing on August 29th!

Riddle:
A girl learns that she has psychic abilities and is asked to help find several missing children by a young cop. During her second mission, she is left shaken and does not wish to help find a group of kids that have been missing. But if she does not help, they may never come home.
Which book is this?

Know the answer? Send Dominique an email at bookvault@yahoo.com with:

“BDAY CONTEST” in the subject line
and:
Name:
The Riddle: A girl learns that she has psychic abilities and is asked to help find several missing children by a young cop. During her second mission, she is left shaken and does not wish to help find a group of kids that have been missing. But if she does not help, they may never come home.
Which book is this?
Answer: (full book title + author)
The name of the site where you found the riddle: In Bed with Books
Your site’s URL: (if you have one)

Please send a separate email for each riddle you answer!

Good luck!!