Graves

Free - Here is an excellent read.  This one is a scary short story, 61 pages.

http://www.barnesandnoble.com/w/graves-justin-cawthorne/1020032338?ean=2940000801802&itm=1&usri=graves

When a gravestone appears in his neighbour's garden Greg Micheals thinks nothing of it. Neither does anyone else.

Until everyone starts dying...