Ashes to Ashes by Lillian Stewart Carl
Series: The Ashes Trilogy.
Approx. 127,930 words.
Published on November 21, 2010.
Historian Rebecca Reid comes to a Scottish castle in Ohio to catalog a collection of historical artifacts. There she's saddled with a Scottish co-worker, Michael Campbell. He has a tartan chip on his shoulder and, Rebecca suspects, a hidden agenda.
When valuables vanish and accidents happen, Rebecca suspects more than ghostly presences are at work. Someone very human wants her gone.