Probationary Constable Peter Grant dreams of being a detective in London’s Metropolitan Police. Too bad his superior plans to assign him to the Case Progression Unit, where the biggest threat he’ll face is a paper cut. But Peter’s prospects change in the aftermath of a puzzling murder, when he gains exclusive information from an eyewitness who happens to be a ghost. Peter’s ability to speak with the lingering dead brings him to the attention of Detective Chief Inspector Thomas Nightingale, who investigates crimes involving magic and other manifestations of the uncanny.

Now, as a wave of brutal and bizarre murders engulfs the city, Peter is plunged into a world where gods and goddesses mingle with mortals and a long-dead evil is making a comeback on a rising tide of magic.

To Arabella Tallant, the eldest daughter of a penniless country clergyman, the invitation to stay with her London godmother was like the key to heaven. In addition to living in the glamorous city, Arabella might even find a suitable husband there. Armed with beauty, virtue, and a benevolent godmother, the impetuous but impoverished Arabella embarked on her first London season with her mother's wish in mind: snare a rich husband.

On her way to London, Arabella's carriage breaks down outside the hunting lodge of the wealthy and socially prominent Robert Beaumaris. Fate cast her in his path. Arabella's only fault is impetuosity, and her pride is stung when she overhears a remark from her arrogant host, who accused her of being another petty female after his wealth. The proud, headstrong ingenue made a most startling claim — she was an heiress! A pretense that deeply amuses the jaded Beau.

To counter her white lie, Beaumaris launches her into high society, thereby subjecting her to all kinds of amorous fortune hunters in London and other embarrassments. Suddenly, Arabella found herself the talk of the ton and pursued by some of the most eligible young men of the day. But only one caught Arabella's fancy: Beaumaris, the handsome and dedicated bachelor. She should know better than to allow herself to be provoked by nonpareil Beau. But would her deceitful charade destroy her one chance for true love?

Beaumaris, however, although a most artful matrimonial dodger, badly underestimated his seemingly naive adversary. When compassionate Arabella rescues such unfortunate creatures as a mistreated chimney sweep and a mixed-breed mongrel, she foists them upon Beaumaris, who finds he rather enjoys the role of rescuer and is soon given the opportunity to prove his worth in the person of Bertram Tallant, the also impetuous young brother of Arabella.