The Dark Inside by Rupert Wallis

When thirteen-year-old James discovers a homeless man in an abandoned house, the course of his life changes dramatically. Hoping to find a 'cure' for a dark curse inflicted on the homeless man, the pair embark on a journey together not knowing that what they discover will impact them both in ways they never imagined...A gripping and haunting story about loss and hope, perfect for fans of Patrick Ness and David Almond.