‘I’m sorry, Sam’s not available,’ says the woman who answers my husband’s phone. I can’t place her voice, so I politely ask who she is. Her answer sends my world spinning out of control: ‘I’m his wife.’

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.

Psychologist Margot Scott has a picture-perfect life: a nice house in the suburbs, a husband, two children and a successful career. On a warm spring morning Margot approaches one of her clients on a busy train platform. He is looking down at his phone, with his duffel bag in hand as the train approaches. That’s when she slams into his back and he falls in front of the train. Margot’s clients all lie to her, but one lie cost her family and freedom.

Mia Hamilton lived the perfect life with her husband, university teacher Zach, and their two-year-old daughter. But everything changed when Zach committed suicide on the same night one of his students vanished. Five years later, just when Mia is beginning to heal, stranger Alison walks into her life, saying her husband didn't kill himself. Fragile, slight Alison leads Mia on a path into Zach's past, and Mia begins to think she never really knew her own husband.

When the call came it seemed like the answer to my prayers. My career as a voice actor had been over for months and me and my little girl Scarlet were living back at my mum’s place. I felt like a failure professionally—and with Scarlet having problems at school, as a parent as well. So, when I was asked to narrate a new book by disappeared novelist Philippa Roberts I jumped at the chance, even if it meant leaving Scarlet with my ex, Hugo, for a few weeks. Hugo, with his perfect new home and his perfect new girlfriend Saskia. But this isn’t a dream come true. It’s a nightmare.

Two-and-a-half-year-old Holly is playing happily in a pink, plastic playhouse, while her mother Rachel sips coffee and chats with a friend nearby. It should be an ordinary day for all of them. But, in the blink of an eye, it turns into every family’s worst nightmare. Holly is taken by a stranger and never found. Nine years later, Rachel is living a quiet life in Dorset. She’s tried to keep things together since the traumatic day when she lost her eldest daughter.

On a warm evening in late summer, best friends Raymond and Cara camp out overnight in the garden. By morning, Raymond is dead and Cara is missing. DI Rita Cannan is called home to the sleepy seaside town of Green-on-the-Sea to investigate Raymond’s murder and try to find Cara - alive. But the case carries eerie echoes of another girl’s death that rocked the close-knit community, decades ago.

Eve, Justin, Susie, and Ed have been friends since they were teenagers. Now in their thirties, the four are as close as ever, Thursday night bar trivia is sacred, and Eve is still secretly in love with Ed. Maybe she should have moved on by now, but she can’t stop thinking about what could have been. And she knows Ed still thinks about it, too. But then, in an instant, their lives are changed forever.

Lucy has a kind and adoring husband, a job she loves as a teacher, and a house on Mulberry Avenue with floaty curtains and the softest bed linen. After her troubled childhood, she knows life will never be perfect, but it’s pretty close. She’s also got Amber, right next door. They never run out of things to talk about. Even if Amber’s life - with her high-profile job and handsome, wealthy boyfriend - is more glamorous than Lucy’s, they share a down-to-earth sense of humor. But then Amber starts to hint that her life isn’t all it seems....

Rachel is afraid she may have done something terrible. She's sitting in a room, being asked whether she killed someone. She doesn't understand how her life has changed so completely. When she was younger, heads would turn when she walked into a room. Her children needed her; her husband adored her. But somehow the years wore that all away. She was so busy raising her children, looking after her parents....

Kate returns from a post-break-up holiday with her girlfriends to news of a serial killer in her hometown - and his victims all look like her. It could, of course, be a simple coincidence. Or maybe not. She becomes convinced she is being watched, followed even. Is she next? And could her mild-mannered ex-boyfriend really be a deranged murderer? Or is the truth something far more sinister?

For Emily Rossi, life may not be perfect, but it's pretty close. She has a great career, a house in the country, a solid marriage to Eric and two wonderful children - tennis superstar Daniel and quiet, sensitive Zara. But when her fourteen-year-old daughter brings home a toxic new best friend, Emily’s seemingly perfect family starts to spiral out of control.

When the body of a woman is found hanging from a tree in her front garden, rookie Detective Morgan Brookes is first on the scene. But Olivia Potter is past saving. And when her husband and daughters cannot be traced, Morgan knows there is more to this tragedy. And then she finds them. Lying huddled together in the dark basement, each of their faces covered with a small cotton cloth, their bodies cold to the touch. But as Morgan kneels beside the family, she realizes that one of the girls is still breathing.

Natalie Long is missing. About to board a high-speed train from London’s Paddington station, she has vanished without a trace. For Detective Chief Inspector Paul Cullen of the British Transport Police, the case is personal. Natalie is good friends with his daughter, Amy, who is certain Natalie is in great danger. Something terrible did happen that weekend. And the time for answers is running out. But can DCI Cullen uncover the truth before it is too late?

It all happens so quickly. One day you’re living the dream, commuting to work by ferry with your charismatic neighbor Kit in the seat beside you. The next, Kit hasn’t turned up for the boat and his wife, Melia, has reported him missing. When you get off at your stop, the police are waiting. Another passenger saw you and Kit arguing on the boat home the night before, and the police say that you had a reason to want him dead. You protest. You and Kit are friends - ask Melia, she’ll vouch for you. And who exactly is this other passenger pointing the finger?