"Keeper of the Grove (Stewards War, #1)"

Stacy Macken has one goal in mind: saving her renowned history center from greedy creditors. Losing it would be a catastrophe—one she doesn’t know how she’ll avoid. Until Aaron Fielding arrives. To all human eyes, he is just like any man, but he reminds Stacy of one of the fae. He certainly enchants her like a fae lover would. But Stacy suspects there is more to this sexy fellow, with his tales of the Tuatha dé Danann, and magical warriors from Celtic legend who protect humanity from a wicked enemy seeking their destruction. Does his appearance mean the end of the world imminent? Can she, a studious woman more intent on history books with no training in or love of war, possibly have anything to offer when a long-prophesied druidic battle explodes around her?