Shadows on the Wall (The York Trilogy)

Different than her typical stuff, but I really enjoyed it. Interesting fantasy/historical fiction about Dan,a boy visiting York with his family, and the links to the past that kept emerging in the form of Roman soldiers. Naylor makes an interesting connection between that and the family's discovery that both Dan and his father have a strong likelihood of contracting Hodgkin's disease, a genetic disease that attacks the brain and nervous system and mimics madness. Is Hodkins disease causing Dan's visions? There's no way to tell, and no solution, no cure. Great moody atmosphere and open ending. First in a series.