All Hallows' Eve — Shelley Chappell

Katie has a secret and only her parents and her best friend, Tommy, know the truth: she can see dead people. Not just any dead people — the ghosts she sees are her ancestors. Everywhere she goes one of them trails alongside her, except one night of the year, on All Hallows' Eve, when all of her ancestors descend to visit her at once. This heart-warming short story of family and friendship is a young adult fantasy of 5000 words.