During a séance for the grieving Chambers family, she unexpectedly hears a real child's voice saying "Hollow Street knows the truth." This leads Eleanor into a dangerous investigation alongside Inspector Frederick Marlowe of Scotland Yard. They discover connections between recent murders mimicking Jack the Ripper's style and the decades-old death of Catherine Blackwood, who had witnessed the original Ripper's crimes. As Eleanor delves deeper, she uncovers shocking truths: the original Ripper was James Chambers, a celebrated ballet dancer, and the new killer is his son George Chambers, who targeted Eleanor to silence Catherine's spirit. Most disturbing of all, Eleanor learns she herself shares blood with the Ripper through her grandmother's relationship with James Chambers. The novel culminates with the surprise reappearance of Eleanor's mother, Sophia, long thought dead, who arrives to reveal family secrets and the complex truth behind their connection to the infamous killer.
