Rough-around-the-edges Harriet Morrow has long been drawn to the idea of whizzing around the city on her bicycle as a professional detective, solving crimes for a living without having to take a husband. She seizes the chance when the prestigious Prescott Agency hires her as its first woman operative. The move sparks controversy—with skeptical male colleagues, a high-strung office secretary, and her boss, Mr. Theodore Prescott, all waiting for her to unravel under the pressure.

December 1927. Mystery-writer Marius Quin has one previous bestseller, endless looming mortgage payments, and no idea how to write his next book. When his childhood friend Lady Isabella Montague invites him to an intimate New Year’s Eve party hosted by a narcissistic actor, Marius seizes upon the distraction. With his perpetually glum Basset hound along for the ride, he navigates the snowy lanes to the opulent estate of Everham Hall. As the celebrations begin, fireworks light up the sky, champagne corks pop, and then the host is murdered…

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.

Olive Belgrave needs a job. Despite her aristocratic upbringing, she’s penniless. Determined to support herself, she jumps at an unconventional job—looking into the background of her cousin’s fiancé, Alfred. Alfred burst into the world of London’s high society, but his answers to questions about his past are decidedly vague. Before Olive can gather more than the basics, a murder occurs at a posh party. Suddenly, every Bright Young Person in attendance is a suspect, and Olive must race to find the culprit because a sly murderer is determined to make sure Olive’s first case is her last.

It is the early spring of 2016 and Queen Elizabeth is at Windsor Castle in advance of her 90th birthday celebrations. But the preparations are interrupted when a guest is found dead in one of the Castle bedrooms. The scene suggests the young Russian pianist strangled himself, but a badly tied knot leads MI5 to suspect foul play was involved. The Queen leaves the investigation to the professionals—until their suspicions point them in the wrong direction. Unhappy at the mishandling of the case and concerned for her staff's morale, the monarch decides to take matters into her own hands.

Frances Wynn, the American-born Countess of Harleigh, enjoys more freedom as a widow than she did as a wife. After an obligatory year spent mourning her philandering husband, Reggie, she puts aside her drab black gowns, leaving the countryside and her money-grubbing in-laws behind. With her young daughter in tow, Frances rents a home in Belgravia and prepares to welcome her sister, Lily, arriving from New York - for her first London season.

The Earl of Wrexford possesses a brilliant scientific mind, but boredom and pride lead him to reckless behavior. He does not suffer fools gladly. So when pompous, pious Reverend Josiah Holworthy publicly condemns him for debauchery, Wrexford unsheathes his rapier-sharp wit and strikes back. As their war of words escalates, London's most popular satirical cartoonist, A. J. Quill, skewers them both.

England, 1925. After years shut away from the world, former detective Lord Edgington of Cranley Hall plans a grand ball to celebrate his seventy-fifth birthday. But when someone starts bumping off members of his scheming family, the old man enlists his teenage grandson to help find the killer, before one of them is next.

London, 1861. Samantha Kingston has lived under the control of her overbearing uncle since the death of her parents six years ago. Trapped by the conventions of her gender and social class, she is desperate to find a way out. But when her aunt and uncle are murdered, the freedom she sought seems even further out of reach. A suspect in the crime, she finds herself on the run, unsure whom to trust, lost in the underworld she had only ever read about in the pages of a Dickens novel.

When Sylvia Shipman's uncle plunges to his death on the eve of a catastrophic stock market crash, the verdict is suicide. But Sylvia doubts the official story after seeing a sinister stranger fleeing the scene. She doubts it even more after learning of her uncle's secret criminal connections. With the help of her family's attractive new chauffeur, the mysteriously capable Miles, Sylvia chases the true killer through the swanky jazz clubs and shadowed alleyways of 1920s New York.

Singapore, 1910 - Desperate for a fresh start, Harriet Gordon finds herself living with her brother, a reverend and headmaster of a school for boys, in Singapore at the height of colonial rule. Hoping to gain some financial independence, she advertises her services as a personal secretary. It is unfortunate that she should discover her first client, Sir Oswald Newbold - explorer, mine magnate, and president of the exclusive Explorers and Geographers Club - dead with a knife in his throat.

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.

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.

December 1903: While Wilbur and Orville Wright's flying machine is quite literally taking off in Kitty Hawk, North Carolina, with its historic fifty-seven second flight, their sister Katharine is back home in Dayton, Ohio, running the bicycle shop, teaching Latin, and looking after the family. A Latin teacher and suffragette, Katharine is fiercely independent, intellectual, and the only Wright sibling to finish college. But at twenty-nine, she's frustrated by the gender inequality in academia and is looking for a new challenge. She never suspects it will be sleuthing . . .

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.

Minnie Harper isn't used to putting herself first. Not after she moved away from England only to be left raising two children alone on the Greek Island of Corfu following her husband's unexpected death. But with her daughter begging to be sent to school abroad and her son grasping at his own independence, Minnie realizes she must prepare for the next stage of her life.

After a decade of exile precipitated by the tragic death of his mother, Will Seems returns home from Richmond to rural Southside Virginia, taking a job as deputy sheriff in a landscape given way to crime and defeat. Impoverished and abandoned, this remote land of tobacco plantations, razed forests, and boarded up homes seems stuck in the past in a state that is trying to forget its complex history and move on.

New York City, 1911. Edith Wharton, almost equally famed for her novels and her sharp tongue, is bone-tired of Manhattan. Finding herself at a crossroads with both her marriage and her writing, she makes the decision to leave America, her publisher, and her loveless marriage. And then, dashing novelist David Graham Phillips—a writer with often notorious ideas about society and women’s place in it—is shot to death outside the Princeton Club. Edith herself met the man only once, when the two formed a mutual distaste over tea in the Palm Court of the Belmont hotel.

Recently widowed, Rebecca Parcell is too busy struggling to maintain her farm in Morristown to give a fig who wins the War for Independence. But rumors are spreading in the winter of 1780 that she's a Loyalist sympathizer who betrayed her husband to the British-quite a tidy way to end her disastrous marriage, the village gossips whisper.

Dee and Jeff soon realize there couldn't be two people more unprepared for the hospitality business. There's also the panic-inducing reality of prowling bears and a general store as the only shopping spot for miles. Living and working in the middle of nowhere takes some getting used to—especially when a disrespectful guest ends up murdered! Now, with the motel duo topping the suspect list, Dee must steer clear of a meddling park ranger, face her past in show biz, and determine if the killer is a local or tourist.