Archaeologist Verity Grey is working at a site in Scotland when she hears what sounds like horses galloping outside her window. Since there aren’t any horses in the area she isn’t surprised when she feels that someone is watching her at the dig site. It’s an ancient Roman campsite that has it’s own Sentinel ghost protecting it. There are other strange things happening that involve paranormal activity and romance. I enjoyed the Scottish slang used by the locals and Verity has to buy a Scottish book to help her translate.