The ancient creation of a madman, Deucalion, arrives in New Orleans to stop his progenitor, Victor Helios, from unleashing a new generation of lethal, synthetic beings upon the world. Deucalion, possessing extraordinary abilities and a singular focus on justice, must navigate a city gripped by fear as he encounters two detectives, Carson O'Connor and Michael Maddison. These officers are investigating a series of gruesome murders that appear to be the work of a killer devoid of human empathy. The narrative follows their uneasy alliance as they confront the reality that the threat is not merely a single murderer, but a burgeoning race of entities that defy natural classification. The story unfolds through a high-stakes investigation that forces the protagonists to question the boundaries between humanity and artifice.

This work is often analyzed for its departure from traditional horror tropes in favor of a more expansive, science-fiction-oriented approach to the Frankenstein mythos. The narrative structure is frequently noted for its blend of gritty police procedural elements with the larger-than-life presence of its titular, immortal protagonist. Readers and critics often point to the book's focus on the philosophical implications of creation and the nature of the soul as central to the experience. The pacing is typically described as brisk, utilizing the tension of a serial killer investigation to propel the reader through the complex lore of Victor Helios's experiments. The book serves as a foundational entry in a larger series, establishing a tone that balances dark suspense with speculative inquiry.