Catherine Coldbridge is a complicated woman: A doctor, an occultist, and, briefly, a widow. In 1879, Private Frank Humble, Catherine’s husband, was killed in a Sioux attack. Consumed by grief, she used her formidable skills to resurrect him. But Frank lost his soul after the reanimation, and disappeared after a killing spree. Unable to face her failure and its murderous consequences, Catherine fled to grieve. Twenty-five years later, Catherine has decided she must make things right. She travels back to Texas with a pair of hired killers ready to destroy Frank. But Frank has remade himself as the Unkillable Frank Lightning, traveling with the Wild West Show. Reaching for a last chance at redemption, Frank and Catherine are at an impasse. As time runs out, their final choices may result in considerable bloodshed.