In 18th century London, twenty-year-old Dennis Must, otherwise known as Sheba, is successfully plying his trade in the taverns and molly houses of Covent Garden. His life is turned upside down when a regular customer is murdered, leaving Sheba as the sole witness and prime suspect. He soon becomes hard-pressed to evade the Bow Street constables, let alone the killer. Reluctantly, Sheba teams up with intriguing lawyer Valentine Lee, finding him to be a helpful ally and more. Can they track down the culprit before Sheba becomes the next victim? And will Sheba's growing feelings for Valentine prove to be his downfall or his salvation?