When magistrate Patrick Colquhoun orders a habitual thief and ne'er-do-well transported to Botany Bay, he doesn't realize a 14-year-old boy has been left behind to follow in his father's footsteps - not until young John Pickett is hauled into Bow Street for stealing an apple from the produce market at Covent Garden. Feeling to some extent responsible for the boy, Mr. Colquhoun prevails upon Elias Granger, a prosperous coal merchant, to take him on as an apprentice.

Having resigned his position at Bow Street, John Pickett waits in vain for someone - anyone! - to engage his services as a private inquiry agent. As weeks go by with no responses to his newspaper advertisement, he has taken to spending his days wandering idly about London rather than admit his failure to his wife.

Haughty Lady Helen Radney is one of London's most beautiful women, and the daughter of a duke, but her sharp tongue has frightened away most of her suitors. When her father gambles away his fortune, the duke's only chance for recouping his losses lies in marrying off Lady Helen to any man wealthy enough to take a bride with nothing to recommend her but a lovely face and an 800-year-old pedigree.

Margaret Darrington is no stranger to genteel poverty herself, since the death of her father has left her in charge of her two younger siblings and feather-brained aunt. But Margaret has a plan: To salvage the family's finances, she has only to put her beautiful younger sister, Amanda, in the way of marrying a wealthy man - perhaps the new Duke of Montford, who is expected to arrive any day. 

Richard, Lord Ramsay, has been brought up from the cradle with a consciousness of his duty to his family and his name. His sense of responsibility has led him to install two elderly aunts in the Dower House; educate his cousin Peter Ramsay and employ him as a steward; and provide a home for poor relation Jane Hawthorne, who once served as his mother's companion.

Cavalry captain Gabriel Lacey returns to Regency London from the Napoleonic wars, burned out, fighting melancholia, his career ended. His interest is piqued when he learns of a missing girl, possibly kidnapped by a prominent member of Parliament. Lacey's search for the girl leads to the discovery of murder, corruption, and dealings with a leader of the underworld.

A murdered opera singer. A duke drenched in her blood. For Bow Street Officer Hugh Marsden, the brutal killing is a straightforward case. Ever since his exile from polite society, the chance to arrest a high and mighty peer of the realm has never presented itself. Hugh won't snub the opportunity now. But Audrey Sinclair, the Duchess of Fournier, is certain her husband is wrongly accused, and she's determined to prove it to the arrogant Bow Street officer, even if she must employ her most peculiar ability—or perhaps curse—to guide her investigation. After all, a duchess can do as she pleases.

When the body of a young man is found stuffed into the tomb of a medieval knight, Parish Constable Daniel Haze is tasked with investigating his first solo murder case. Suspicion instantly falls on the only stranger to arrive in the village of Birch Hill just before the crime took place, but the American captain proves to be an unexpected asset. A former soldier and a skilled surgeon, Jason Redmond is not only willing to assist Haze with the investigation but will risk his own safety to apprehend the killer.

Hours later, the man’s cold body lies in the city mortuary, alongside the woman he couldn’t save. And his sister, unconventional nurse Gemma Tate, tracks down troubled police inspector Sebastian Bell to unravel the truth. Sebastian has enough pressure to solve the murder of an aristocratic heiress without Gemma meddling in his case. But the cryptic sentences she brings him from her brother’s notebook could be a crucial lead. If only they knew what “milky way” meant.

She's an unconventional lady who has traveled the world, practices the art of self-defense most excellently, and has an interesting tattoo in—ahem—a very unusual place. He's a former member of the Metropolitan Police, now a private investigator, who grew up on the poverty-ridden streets of Edinburgh and has worked the dangerous back alleys of London's notorious East End. A vicious murder brings them together in a race against time that takes them from the sordid back streets of London into the elite private clubs of the powerful and rich.