Street savvy Constance is a prostitute that has survived the Ripper's reign of terror by working her trade in the safety of her room at the Keg and Barrel - but is any girl truly safe in Whitechapel? When the enigmatic Lord Alisdair requests her services at his estate, Constance discovers the occult underworld of London's elite - and finds herself at its center. As Alisdair shares his secrets, Constance becomes his willing altar, offering herself to him and his rituals in body and soul. She's seen Alisdair's power, seen it grow with her at his side, but as the circle's secrets unfold before them, will their connection be enough to get them through London's darkest hour alive?