Adrian de Soules, exiled Templar in clandestine service to Robert the Bruce, finds himself drawn to flame-haired Kendra Claremont—niece of the Earl of Pembroke and granddaughter of an arch-enemy of the secret Templar Brotherhood—and knows she's trouble. Finding she hates Templars, blaming them for her father's suicide, increases the incentive to keep his distance. But, like a sailor at sea, he hears the ancient siren call.

Kendra is intrigued by Adrian, the French knight so unlike the foppish couriers her aunt wants her to marry. She can't deny his striking eyes send tingles through her, but she senses something secretive about him. Is he really just an envoy from Scotland as he says? A dark current runs deep within him, and she's determined to find it out. Yet, when she does, where will her loyalty lie?