Breath of a Ghost — Anita Horrocks

Ever since his little brother died, Darien has been practically invisible to his parents. Their pain echoes his, but the only one who notices is Darien's dog, Ringo. The loss of Jeri is hard enough, but then there is the recurring nightmare, always terrifying, always the same - until now. Now it has begun happening while Darien is awake and the dangers are real. But even at the most horrible moments a presence, familiar yet strange, comforting yet disturbing, is with him. It comes on the wind and smells like toothpaste and peanut butter. It smells like Jeri and it is here to save him.