Harper and the Sea of Secrets

From Author Wars - https://authorwars.com/publications/harper-and-the-sea-of-secrets-557354.html

Overview:

Title: Harper and the Sea of Secrets
Author: Cerrie Burnell
Year: 2016
ISBN-10: 9781407166438
Publisher: Scholastic Press
Price: £5.00
Pages:
Binding: Trade Paperback
Type: Chapter Book
Title Reference: Harper and the Sea of Secrets
Notes: Data from Amazon UK as of 2016-01-26. Page count uncertain -- appears to be a part of a "book pack", which may account for the higher price than similar World Book Day booklets.