Cassian Gaius is over one thousand years old and cursed to live forever. After watching his lover grow old and die, he vowed to remain alone until the curse is broken. But three hundred years later, his acquaintance with a lady's maid blossoms into something beyond his control. Aila de Keith has been in love with Cassian ever since he took up the role of Captain of the Dunnottar Guard. Unfortunately, the enigmatic warrior remains polite yet distant with her. But when Cassian and Aila accompany their laird and his wife on a mission to occupied Stirling, their relationship changes. The man they serve makes dangerous enemies, and Cassian and Aila are thrown into an adventure that risks revealing both their secrets: his immortality and her love for him.