A college student unexpectedly finds that she has inherited a derelict house. Accompanied by a group of friends, she goes there to clear it of heirlooms before the structure is demolished. Almost immediately, she and her friends are targeted by a powerful warlock who is very interested in her bloodline.
Will and Maura, despite their marital problems, decide to come to Ireland and live on Maura's ancestral estate, bringing with them their daughter Aubrey. But soon weird happenings around the house lead a local priest to confess that Maura's ancestors practiced black magic, and Maura's own insecurities threaten to bring her into the evil fold.
Set in 1815, a young Englishman touring Europe encounters more than he bargained for. His pursuit of the beautiful Countess St. Alyre brings him into contact with the Marquis D'Armanville and other odd characters. A series of bizarre murders occur, bringing our hero to the borderland of nightmare.