Miss Caroline has doubts when she receives an urgent invitation from a London law firm to discuss her late father's estate. After all, the dishonored Earl of Morton died without a pound sterling. But while helping Mrs. Frogerton's daughter navigate the high social season, Caroline meets with a cagey lawyer, Mr. Smith, who shares life-altering news—the earl composed a second will, leaving behind an undisclosed fortune. Mrs. Frogerton, however, is unimpressed with the firm's conduct and suspicious of their motives. Her instinct proves right when the two ladies find the office ransacked.

Scotland Yard Inspector Henry Field has few clues to follow but is determined to prove his quick rise through the ranks of the Metropolitan Police wasn't simply because of his last name. Yet when the ravenkeeper's daughter is found, the case becomes even more complicated. Discovering the frightened, disheveled girl on her doorstep is a shocking start to widow Amelia Greystone's day. So is the inspector assigned to the case—the same one who has yet to solve her husband's murder.

It is 1864 when Lizzie Martin takes up the post of companion to a wealthy widow who is also a slum landlord. Lizzie is intrigued to learn that her predecessor disappeared, supposedly having run off with an unknown man. But when the girl's body is found in the rubble of one of the recently demolished slums around the prestigious new railway station at St Pancras, Lizzie begins to wonder exactly what has been going on.

Former stand-up comic Juno Mulligan has been suffering a serious sense-of-humour failure. Not only has she lost the love of her life, but she’s having to relocate to the (admittedly idyllic) village of Inkbury to watch out for her elderly mother, who she’s genuinely worried might be marrying a wife-killer. She hopes that her old friend, disgraced-journalist-turned-novelist Phoebe Fredericks can help her crack the case of whether her mother’s perma-tanned, iceberg-smiled, three-times-a-widower fiancé is hiding a murderous past.

England, 1914. Joanna Blalock's keen mind and incredible insight lead her to become a highly skilled nurse, one of the few professions that allow her to use her finely tuned brain. But when she and her 10-year-old son witness a man fall to his death, apparently by suicide, they are visited by the elderly Dr. John Watson and his charming, handsome son, Dr. John Watson Jr. Impressed by her forensic skills, they invite her to become the third member of their investigative team.

Young widow Penelope Thornton-McClure and her old Aunt Sadie are making ends meet by managing a mystery book shop - a quaint Rhode Island landmark rumored to be haunted. Pen may not believe in ghosts, but she does believe in good publicity - like nabbing Timothy Brennan for a book signing. But soon after the bestselling thriller writer reveals a secret about the store's link to a 1940s murder, he keels over dead - and right in the middle of the store's new community events space. Who gives Mrs. McClure the first clue that it was murder?

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.

Major Robert Kurland has returned to the quiet vistas of Kurland St. Mary to recuperate from the horrors of Waterloo. However injured his body may be, his mind is as active as ever. Too active, perhaps. When he glimpses a shadowy figure from his bedroom window struggling with a heavy load, the tranquil façade of the village begins to loom sinister....

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.

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.