Standing on the cliffs of 12th-century Ireland following the disappearance of his twin, Hoyt Mac Cionaoith is visited by the goddess Morrigan and is charged with the ultimate of tasks: saving his and all future worlds. His enemy, the beautiful but deadly vampire queen Lilith, has had over 2,000 years of experience in cruelly killing and changing humans into one of her own - including Hoyt's brother, Cian.

With indifferent parents, Iona Sheehan grew up craving devotion and acceptance. From her maternal grandmother, she learned where to find both: a land of lush forests, dazzling lakes, and centuries-old legends. Ireland. County Mayo, to be exact. Where her ancestors’ blood and magic have flowed through generations - and where her destiny awaits. Iona arrives in Ireland with nothing but her Nan’s directions, an unfailingly optimistic attitude, and an innate talent with horses.

A champion boat racer, Cameron Quinn traveled the world spending his winnings on champagne and women. But when his dying father calls him home to care for Seth, a troubled young boy not unlike Cameron once was, his life changes overnight.

It began on New Year’s Eve. The sickness came on suddenly, and spread quickly. The fear spread even faster. Within weeks, everything people counted on began to fail them. The electrical grid sputtered; law and government collapsed - and more than half of the world’s population was decimated. Where there had been order, there was now chaos. And as the power of science and technology receded, magick rose up in its place.

When Nell Channing arrives on charming Three Sisters Island, she believes that she's finally found refuge from her abusive husband - and from the terrifying life she fled so desperately eight months ago. Just as Nell starts to wonder if she'll ever be able to break free of her fear, she realizes that the island suffers from a terrible curse - one that can only be broken by the descendants of the Three Sisters, the witches who settled the island back in 1692.