The Witchery brings to a close the Herculine trilogy—a story told by a character who "invades our consciousness" (The Tampa Tribune).

In the middle decades of the nineteenth century, Herculine is summoned from self-imposed exile by her teacher, the witch Sebastiana d'Azur, and told to sail from the Florida territory to Havana. There she is to search out one Queverdo Brù—a cruel and demonic man whose house holds terrible secrets---to learn of a certain "surprise." En route, Herculine defends the honor of a sailor-boy whom thereafter she wants by her side. But lies and truths conspire to separate Herculine from those she loves, and she finds herself alone with Brù, who sees in her something he has long sought, and now seeks to use, harshly, as he practices that most ancient of arts: alchemy.

Escaping Brù, Herculine sails from Havana, knowing Sebastiana is near. In the Florida Keys, she reunites with her and meets her "surprise"—the shocking product of a forbidden encounter ten years prior. Surviving an Indian attack on a sparsely-settled key, Herculine and family decamp to Key West. There they set out to make their fortune--by means magical or otherwise—as Herculine is tested at every turn by the harsh landscape and haunted by thoughts of her own demise.

Spanning decades defined by war, disease, and ideals that tore a nation apart, Herculine's struggle is both a universal one—marked by love, loss, fear, and regret—and yet quite particular, and set in "the heady atmosphere of a bygone era brought deftly to life" (bestselling author Eric Van Lustbader).