Knitbone Pepper Ghost Dog And A Horse Called Moon By Claire Barker

(Knitbone Pepper #3)
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Meet Knitbone Pepper; the dead special ghost dog haunting Starcross Hall!
Knitbone Pepper's beloved owner Winnie is fascinated by the stars after Knitbone digs up an ancient telescope. So when a heartbroken ghost horse asks for help finding her owner - a world-famous astronomer - Knitbone looks to the skies for a dazzling answer.