Need Help identifing a book...Please Help!!!?

I remember a book i read 5 or 6 years ago that really scared me (of course i was like 11 0r 12 then) but I have no idea what it's called and i'd like to find it. I remember it was about a boy who moves with his mother into like a museum curators house or her boss or somthing. Anyway, the guy has a lot of egyptian artifacts and the boy ends up being like haunted by the ghost of anubis or something. I remember it was really good but i can't seem to find it anywhere! help would be very much appreciated.