In Thunder's Pocket — Joan Aiken

When Ned is sent to stay with his aunt and uncle in Thunder's Pocket, he's not very pleased. But from the moment a bird flies into the train carriage on his journey there, Ned realises this isn't going to be an ordinary seaside holiday. Has the eccentric sculptor, Marlot Corby, really put a curse on Ned's aunt? What secrets will he find in Marlot's house and gardens? Life in Thunder's Pocket is going to be anything but dull.