Superstition

It all began with an experiment. Then something went awry... David Ambrose's supernatural thriller had enough twists and turns to keep me interested without being too eerie or scarey. I don't read much in this genre but this one came recommended and I enjoyed it.
Joanna Cross is a journalist who wants to do an article on the paranormal. With the help of a university psychologist, a group begins meeting to try to conjure up a ghost completely from their collective imagination. The group gets results--table knocking, writing on windows and other ghostly behavior begins. Then one of the group members dies. Then another... That part is suspenseful enough. But the last quarter of the book takes a huge turn. It'll keep you reading past midnight.