Phoebe's Locket

Phoebe and her mother moved to the cottage in the Cotswold Hills of England with the understanding that they might not stay long. The cottage, after all, is on the property of Gardiner Hall; if anyone moves into the hall, Phoebe and Mam have to leave. How surprising when it's old Mr. Gardiner himself who has hired men to clean up the place Soon, Gardiner moves in, along with his amnesiac son, his widowed daughter, and her blind son, Robbie. When Phoebe meets Robbie, she knows it means she may have to leave her happy cottage, but her mother brightens the day by gifting Phoebe with a beautiful and mysterious locket. What is the truth behind the locket, and who's hiding a big secret in Gardiner Hall?