Cora, skeptical of the supernatural, believes the serpent could be a previously undiscovered species and starts investigating. She forms an unlikely friendship with the local vicar, William Ransome, who is equally determined to debunk the myths but from a religious standpoint. Their relationship is central to the novel, exploring the tension between scientific inquiry and faith.
As the story unfolds, Cora and William navigate personal and communal fears, superstitions, and the evolving landscape of knowledge and belief. The novel also delves into the lives of other characters in the village, adding depth and richness to the narrative.
The Essex Serpent is praised for its lush prose, complex characters, and its exploration of the clash between the rational and the mystical, making it a compelling read that offers a vivid portrayal of Victorian England.