What happens when a desperately lonely woman stumbles upon a magazine article outlining the “31 Ways to Be Happy” and decides to use it as a last-ditch attempt to turn her life around?

Left with an estate on the brink of bankruptcy after their father's death, Lady Marigold Fairfax and her brother open a private investigation firm marketed to the elite . . . to spy on the elite. Dubbed The Imposters, Ltd., their anonymous group soon becomes the go-to for the crème of society when they want answers delivered surreptitiously. But the many secrets Marigold learns about her peers pale in comparison to her shock when she and her brother are hired to investigate her best friend's father as a potential traitor.

Seven years ago, a letter left inside a tree brought Laura Bradshaw an anonymous friend who helped her navigate the tragic loss of her mother and gave her something to look forward to despite the overbearing hand of her father. Life would be far bleaker, if not for her beloved Letter Tree, her dear friend, and her secret trips to the Buffalo Zoo. But even these rays of light are threatened when her father decides to play matchmaker in order to further his business goals.

Vienna, 1954 After losing everyone she loves in the final days of World War II, Ingrid Bauer agrees to a hasty marriage with a gentle Soviet embassy worker and follows him home to Moscow. But nothing within the Soviet Union’s totalitarian regime is what it seems, including her new husband, whom Ingrid suspects works for the KGB. Inspired by her daughter’s birth, Ingrid risks everything and reaches out in hope to the one country she understands and trusts—Britain, the country of her mother’s birth. She begins passing intelligence to MI6, navigating a world of secrets and lies, light and shadow.

Brynn Cornell has to be stuck in a nightmare. Just last week, she was riding high as cohost of the popular morning show Sunup. She’s America’s Ray of Sunshine—the girl-next-door beauty who drives up TV ratings while never exuding anything but her trademark positivity and poise. All it took was one huge on-air mistake to expose her snarky side to the world and make it all come crumbling down. Now she’s back in her hometown of Adelaide Springs, Colorado, in a last-ditch attempt to convince viewers she’s not the mean girl they think she is. 

Caroline Payne thinks it’s just another day of work until she receives a call from Mat Hammond, an old college friend and historian. But pleasantries are cut short. Mat has uncovered a scandalous secret kept buried for decades: In World War II, Caroline’s British great-aunt betrayed family and country to marry her German lover. Determined to find answers and save her family’s reputation, Caroline flies to her family’s ancestral home in London.

Cassandra Hale grew up knowing little about her parentage, and she had made peace with the fact that she never would. But her world shifts when a shocking deathbed confession reveals a two-year-old letter from Mr. Clark, the master of Briarton Park, with hints to her family’s identity. Stung by betrayal, Cassandra travels to the village of Anston only to learn Mr. Clark has since passed away.

Spring, 1905: Free-spirited like the Thoroughbreds she rides across the Kentucky countryside, Stella takes adventure by the reins when she's asked to attend a mysterious wedding in rural England. But once she arrives at the lush Morrington Hall estate, her cold and ambitious father confesses that he won't only give away his best racehorses as gifts - he has also arranged to give away his daughter as bride to the Earl of Atherly's financially strapped son. Stella refuses to be sold off like a prized pony. Yet despite a rough start, there's something intriguing about her groom-to-be.

It's a race against the clock in this tale of danger and intrigue. In the glitzy era of the 1920s, charming armature sleuths, Tommy and Tuppence set out to solve the mysterious disappearance of a client and unravel a mysterious plot involving blackmail, international intrigue, and perhaps even the sinking of the Lusitania. When labor unrest erupts in England, the situation could turn deadly if a state secret falls into the wrong hands, but Tuppence has no qualms in accepting a job offer to stop that from happening.

Barbados, 1854: Emily Dawson has always been the poor cousin in a prosperous English merchant clan - merely a vicar’s daughter, and a reform-minded vicar’s daughter, at that. Everyone knows that the family’s lucrative shipping business will go to her cousin, Adam, one day. But when her grandfather dies, Emily receives an unexpected inheritance: Peverills, a sugar plantation in Barbados - a plantation her grandfather never told anyone he owned.

Rome, 1943. With the fall of Italy’s Fascist government and the Nazi regime occupying the streets of Rome, British ballerina Julia Bradbury is stranded and forced to take refuge at a hospital on Tiber Island. But when she learns of a deadly sickness sweeping through the quarantine wards—a fake disease known only as Syndrome K—she is drawn into one of the greatest cons in history. Alongside hospital staff, friars of the adjoining church, and two Allied medics, Julia risks everything to rescue Jewish Italians from the deadly clutches of the Holocaust.

The bad boy and the golden girl have traded places….I’m back in Harvest Hollow after ten years to prove a point and to even a few scores. I’ve opened a new bar, and anyone expecting the old sweet and shy Jolie McGraw to be running it is in for a shock. I’m not the only one who’s changed: when the sheriff comes to tell me I’m the prime suspect in the most ridiculous crime in town history, it’s none other than Lucas Cole, the former star of my teenage stress dreams, wearing the badge.

For the tourists traveling on Henry Flagler’s legendary Overseas Railroad, Labor Day weekend is an opportunity to forget the economic depression gripping the nation. But one person’s paradise can be another’s prison, and Key West-native Helen Berner yearns to escape. After the Cuban Revolution of 1933 leaves Mirta Perez’s family in a precarious position, she agrees to an arranged marriage with a notorious American.

Inspired by their fascination with all things Sherlock Holmes, best friends and flatmates Merinda and Jem launch a consulting detective business. The deaths of young Irish women lead Merinda and Jem deeper into the mire of the city's underbelly, where the high hopes of those dreaming to make a new life in Canada are met with prejudice and squalor. While searching for answers, donning disguises, and sneaking around where no proper ladies would ever go, they pair with Jasper Forth, a police constable, and Ray DeLuca, a reporter in whom Jem takes a more than professional interest.

Travel writer Amelia Balfour's dream of touring Egypt is halted when she receives news of a revolutionary new surgery for her grotesquely disfigured brother. This could change everything, and it does...in the worst possible way. Surgeon Graham Lambert has suspicions about the doctor he's gone into practice with, but he can't stop him from operating on Amelia's brother. Will he be too late to prevent the man's death? Or to reveal his true feelings for Amelia before she sails to Cairo?