The Nightmare Stone by Finian Black

An different, unusual book, which was slow to start but improved.

The ultimate lucky break gives John Harris and his family the opportunity to fulfill their wildest dreams. But all dreams have a darker side, and John's past is never far away, ready to reach through to cast its shadow.
One hundred years ago, their new home was the scene for strange events that cannot easily be explained.
As John feels his past draw ever nearer, he knows that he must face up to his deepest fears if he is to prevent history repeating itself.
And as the past and present collide, a force beyond his control or comprehension is looking for one, final battle.