Hell House, by Richard Matheson.Read about the other books on the list.
At the behest of an eccentric millionaire, four investigators enter the Belasco House, considered to be the most haunted house in the world. Who among them will make it through the week? File this one under very scary. In fact, I just looked over my shoulder while writing this because I got a weird feeling. Not for grandmothers or the weak of heart.
--Marshal Zeringue