London, 1815. Lady Petra Forsyth, daughter of the Earl of Holbrook, has made a shocking proclamation. After losing her beloved fiancé in an accident three years earlier, she announces in front of London’s loosest lips that she will never marry. A woman of independent means—and rather independent ways—Petra sees no reason to cede her wealth and freedom to any man now that the love of her life is gone. Instead, she plans to continue enjoying the best of society without any expectations.

Lady Katherine would rather chase clues than suitors. Her reputation as a matchmaker could give her the cover she needs to follow in her detective father's footsteps. If she catches the Pink Ribbon Killer before he strikes again, she'll win her dowry and her independence in the process. One look through the exclusive Northbrooke estate house party doubles her suspect list. With the help of her trusty maid and her precocious pug, Katherine risks it all to unmask the killer. But is winning her freedom worth putting another debutante in mortal danger?

Rosalind Thorne may not have a grand fortune of her own, but she possesses virtues almost as prized by the haut ton: discretion, and a web of connections that enable her to discover just about anything about anyone. Known as a "most useful woman," Rosalind helps society ladies in need--for a modest fee, of course--and her client roster is steadily increasing.

The daughter of a baronet and minor heiress, Rosalind Thorne was nearly ruined after her father abandoned the family. To survive in the only world she knew, she began to manage the affairs of some of London society's most influential women, who rely on her wit and discretion. So when artistocratic wastrel Jasper Aimesworth is found dead in London's most exclusive ballroom, Almack's, Rosalind must use her skills and connections to uncover the killer.

London, 1851, and the Great Exhibition is on. A soaring success despite months of dour predictions, it is the event of the year, on front pages and wagging tongues the world over—and Miss Kara Levett is thrilled to be in the middle of it. The daughter of a baron and an exhibitor herself, she happily demonstrates her elaborate automatons and case clocks to the crowds. But her situation grows perilous when a man is murdered in the Crystal Palace and she becomes the prime suspect.