A Mackenzie Clan Gathering — Jennifer Ashley

The Mackenzie clan is about to gather for Hart's birthday at the sprawling family estate in Scotland. But before the festivities can start, the house is robbed, and thieves make off with an untold fortune in rare art.

Ian and Beth Mackenzie, who are alone at the castle during the robbery, must do what they can to retrieve the family treasure and find out who is targeting the family. But Ian is distracted by a family friend who claims he might have the power to "cure" Ian of his madness forever.

(Also available in the "Mackenzie Clan Christmas" anthology.)