The whispers
(Book)

"Eleven-year-old Riley's mom has disappeared and Riley knows that if he leaves tributes for the whispers, magical fairies that grant wishes, his mom will come back to him"--,Provided by publisher.

Eleven-year-old Riley believes in the whispers, magical fairies that will grant you wishes if you leave them tributes. Riley has a lot of wishes. He wishes bullies at school would stop picking on him. He wishes Dylan, his 8th grade crush, liked him, and Riley wishes he would stop wetting the bed. But most of all, Riley wishes for his mom to come back home. She disappeared a few months ago, and Riley is determined to crack the case. He even meets with a detective, Frank, to go over his witness statement time and time again. Frustrated with the lack of progress in the investigation, Riley decides to take matters into his own hands. So he goes on a camping trip with his friend Gary to find the whispers and ask them to bring his mom back home. But Riley doesn't realize the trip will shake the foundation of everything that he believes in forever. --from Amazon.