In 1718, in an England that might have been, the law found Rosalind Bainbridge guilty of witchcraft. In lieu of execution, she became Private Bainbridge of the 101st Pistoleers... A Gunwitch of the King's Coven. Twenty-four years later, dishonorably discharged and working as a scout on the Amerigon frontier, Rose's past comes looking for her. A summons and a request from the officer who saved her from the hangman's noose. A reunion with another veteran of the 101st, someone she never wanted to see again. And a meeting with the Misses Janett and Margaret Laxton, the daughters of the man who pressed her into service as a gunwitch. Reluctantly, Rose agrees to take Janett and Margaret to their father at Fort Russell. No one knows the swamps around New Venezia better than Rose and her bloodsister, the enigmatic Chal. The trip should take only a few days. But there's more waiting in the swamps than mud and mosquitoes. War and betrayal threaten Rose and the girls, while an ancient, unspeakable evil pursues them all the way to the walls of Fort Russell.