Beautiful and mysterious, dressed all in black, Róisín Ó Duibh is an ancient creature—a banshee who comes to warn and weep before a death. More than a thousand years ago, she was human and she secretly dreams of being mortal again. That desire increases when she meets handsome Irish accountant Joe O'Neill. He suspects she's a banshee from the first moment but she denies it. Their immediate attraction leads to sweet, wild sex but it's more than that—the banshee's fallen in love with the human. After dodging his questions, she promises to tell him the truth and when she does, she learns he loves her too. It seems hopeless, but a rash gamble will either unite them forever or end in their deaths.