In a peaceful retirement village, four unlikely friends meet weekly in the Jigsaw Room to discuss unsolved crimes; together, they call themselves the Thursday Murder Club. When a local developer is found dead with a mysterious photograph left next to the body, the Thursday Murder Club suddenly find themselves in the middle of their first live case.

High-powered businesswoman Lana Rubicon has a lot to be proud of: her keen intelligence, impeccable taste, and the L.A. real estate empire she’s built. But when she finds herself trapped 300 miles north of the city, convalescing in a sleepy coastal town with her adult daughter Beth and teenage granddaughter Jack, Lana is stuck counting otters instead of square footage—and hoping that boredom won’t kill her before the cancer does.

It has been an eventful morning for Agnes Sharp and the other inhabitants of Sunset Hall, a house share for the old and unruly in the sleepy English countryside. Although they have had some issues (misplaced reading glasses, conflicting culinary tastes, decreasing mobility, and unruly grandsons), nothing prepares them for an unexpected visit from a police officer with some shocking news. A body has been discovered next door. Everyone puts on a long face for show, but they are secretly relieved the body in question is not the one they’re currently hiding in the shed (sorry, Lillith).

Feisty, passionate Beatrice Steele has never fit the definition of a true lady, according to the strict code of conduct that reigns in Swampshire, her small English township—she is terrible at needlework, has absolutely no musical ability, and her artwork is so bad it frightens people. Nevertheless, she lives a perfectly agreeable life with her marriage-scheming mother, prankster father, and two younger sisters— beautiful Louisa and forgettable Mary. But she harbors a dark secret: She is obsessed with the true crime cases she reads about in the newspaper.

At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

England, 1920. Eleanor Swift has spent the last few years travelling the world: taking tea in China, tasting alligators in Peru, escaping bandits in Persia and she has just arrived in England after a chaotic 45-day flight from South Africa. Chipstone is about the sleepiest town you could have the misfortune to meet. But then, from the edge of a quarry, through the driving rain, Eleanor is shocked to see a man shot and killed in the distance. Before she can climb down to the spot, the villain is gone and the body has vanished.

Judith Potts is 77 years old and blissfully happy. She lives on her own in a faded mansion just outside Marlow, there’s no man in her life to tell her what to do or how much whisky to drink, and to keep herself busy she sets crosswords for The Times newspaper. One evening, while out swimming in the Thames, Judith witnesses a brutal murder. The local police don’t believe her story, so she decides to investigate for herself and is soon joined in her quest by Suzie, a salt-of-the-earth dog-walker, and Becks, the prim and proper wife of the local vicar.

Just a few years ago, Corie Geller was busting terrorists as an agent for the FBI. But at 35, she traded in her badge for the stability of marriage and motherhood. On Wednesdays, she has lunch with her fellow Shorehaven freelancers at a so-so French restaurant, where she senses that something's off. Pete Delaney, a milquetoast package designer, always shows up early, sits in the same spot (often with a different phone in hand), and keeps one eye on the Jeep he parks in the lot across the street. Corie intuitively feels that Pete is hiding something....

June 1933. Independent, young Kitty Underhay has been left in charge of her family’s hotel, The Dolphin, on the tranquil English coast. But when several rooms are broken into and searched, including Kitty’s own, she quickly realizes that something out of the ordinary is afoot at the hotel. Soon, rumors are flying in the cozy town that someone is on the hunt for a stolen ruby. A ruby that Kitty’s mother may well have possessed when she herself went missing during the Great War.

Single mom Jess Davis is a data and statistics wizard, but no amount of number crunching can convince her to step back into the dating world. After all, her father was never around, her hard-partying mother disappeared when she was six, and her ex decided he wasn’t “father material” before her daughter was even born. Jess holds her loved ones close but working constantly to stay afloat is hard...and lonely. But then Jess hears about GeneticAlly, a buzzy new DNA-based matchmaking company that’s predicted to change dating forever.

Mrs. King is no ordinary housekeeper. Born into a world of con artists and thieves, she’s made herself respectable, running the grandest home in Mayfair. The place is packed with treasures, a glittering symbol of wealth and power, but dark secrets lurk in the shadows.

Twenty-six-year-old editorial assistant Nella Rogers is tired of being the only Black employee at Wagner Books. Fed up with the isolation and microaggressions, she’s thrilled when Harlem-born and bred Hazel starts working in the cubicle beside hers. They’ve only just started comparing natural hair care regimens, though, when a string of uncomfortable events elevates Hazel to Office Darling, and Nella is left in the dust.

Jen Weinstein and Lauren Parker rule the town of Salcombe, Fire Island every summer. They hold sway on the beach and the tennis court, and are adept at manipulating people to get what they want. Their husbands, Sam and Jason, have summered together on the island since childhood, despite lifelong grudges and numerous secrets. Their one single friend, Rachel Woolf, is looking to meet her match, whether he’s the tennis pro. But even with plenty to gossip about, this season starts out as quietly as any other. Until a body is discovered, face down, off the side of the boardwalk.

When Lila Macapagal moves back home to recover from a horrible breakup, her life seems to be following all the typical rom-com tropes. She's tasked with saving her Tita Rosie's failing restaurant, and she has to deal with a group of matchmaking aunties who shower her with love and judgment. But when a notoriously nasty food critic (who happens to be her ex-boyfriend) drops dead moments after a confrontation with Lila, her life quickly swerves from a Nora Ephron romp to an Agatha Christie case.

Whether dueling with new forensics or the local old boys' network, irreverent defense attorney Andy Carpenter always leaves them awed with his biting wit and winning fourth-quarter game plan. But the fun stops the day Andy's dad, Paterson, New Jersey's legendary ex-DA, drops dead in front of him at a game in Yankee Stadium.