When an immortal warrior meets a Scottish lass bewildered by the magic she has inherited, he yearns to protect her. But will his attentions doom them both to Zeus' anger? Or worse, make his lovely mortal the target of the goddess Circe's growing evil?

Alec Cantio is the son of a siren. He and his three brothers hide their true identities while protecting humans from the negligence of the gods. All Alec wants when he visits his favorite magic shop, Speak O’ the Devil, are provisions for his task. But he finds instead a mortal woman, innocent and brave, who tempts him with all he is forbidden to have.

Eilidh MacLeod just wants to close her granddad's shop, and mourn him in peace. But when she's thrust into a world filled with magic, mythical creatures, and gods, she must find a way to control her powers, or be destroyed by a vengeful Circe. But how can she concentrate around the magnetic Alec? Her powerful attraction to him could endanger them all.