Lisa and Elliot have been best friends ever since the day they met as children. Popular, bright and sporty, Lisa was Elliot's biggest supporter when the school bullies made his life a misery, and for that, he will always be grateful. Twenty years later, life has pulled the pair apart, and Lisa is struggling. Her marriage is floundering, her teenage kids are being secretive and she's so tired she can't think straight. So when Elliot knocks on the door, looking much better than she remembers, she can't help but be delighted to see her old friend again.

Luke Craven is convinced that the world is against him; his once-happy life hasn’t been the same since he lost both of his parents and his wife in quick succession, and his everyday has become more about existing than living. But he is forced to reconsider his glass-half-empty outlook when he narrowly escapes a freak accident with his life - pushed to safety by a stranger, who isn’t so lucky.

For a decade, Hannah’s life has been pretty close to perfect - she has a great job, she’s married to Mark, and her child-free existence means she’s free as a bird. The only sadness in her life is a fall-out with her sister Diane, who hasn’t spoken to her in over 10 years. But now Diane is on her doorstep - and this time, she’s got her teenage daughter, Mia, in tow. When Diane asks if Mia can stay with Hannah and Mark for a few days, Hannah is glad of the chance to get to know her niece. But as the days turn into weeks and Diane doesn’t return, Hannah begins to worry....

Alice: beautiful, kind, manipulative, liar. Clare: intelligent, loyal, paranoid, jealous. Clare thinks Alice is a manipulative liar who is trying to steal her life. Alice thinks Clare is jealous of her long-lost return and place in their family. One of them is telling the truth. The other is a maniac. Two sisters. One truth.

Abigail Gibson is gone. The day after Christmas, she walks out of her home in the suburbs, leaving behind a strange note on the kitchen table...and her 10-year-old son, Sam. When her sister Gillian gets the call, she can barely believe it: Abigail has always been a little, well, unreliable, but she hasn’t done anything like this in a decade - not since Sam was born. Now, Gillian and her husband are taking care of Sam while they wait for news of Abigail.

Ever since Steph’s husband walked out after a 30-year marriage, home hasn’t felt like a safe haven. Her daughter Bea thinks she’s imagining things. But Steph knows that the noises in the night, the open windows she knows she left closed, the strange smell in the kitchen - none of it feels right.

Louise is a single mom, a secretary, stuck in a modern-day rut. On a rare night out, she meets a man in a bar, and sparks fly. Though he leaves after they kiss, she's thrilled she finally connected with someone. When Louise arrives at work on Monday, she meets her new boss, David. The man from the bar. The very married man from the bar...who says the kiss was a terrible mistake but who still can't keep his eyes off Louise. And then Louise bumps into Adele, who’s new to town and in need of a friend. But she also just happens to be married to David.

Alex Dale is lost. Destructive habits have cost her a marriage and a journalism career. All she has left is her routine: a morning run until her body aches, then a few hours of forgettable work before the past grabs hold and drags her down. Every day is treading water, every night is drowning. Until Alex discovers Amy Stevenson. Amy Stevenson, who was just another girl from a nearby town until the day she was found unconscious after a merciless assault. Amy Stevenson, who has been in a coma for fifteen years, forgotten by the world.

"Are you my mummy?" Tessa Markham returns home to find a child in her kitchen. He thinks she’s his mother. But Tessa doesn’t have any children. Not anymore. She doesn’t know who the little boy is or how he got there. After contacting the police, Tessa is suspected of taking the mystery child. Her whole life is turned upside down. And then her husband reveals a secret of his own. Tessa isn’t sure what to believe or who to trust. Because someone is lying. To find out who, she must confront her painful past. But is the truth more dangerous than Tessa realises?

You think you know the truth about the people you love. But one discovery can change everything.... Eight-year-old Billy goes missing one day, out flying his kite with his sister Rose. Two days later he is found dead. Sixteen years on, Rose still blames herself for Billy's death. How could she have failed to protect her little brother? Rose has never fully recovered from the trauma, and one of the few people she trusts is her neighbour Ronnie, who she has known all her life.

Newly married Natasha has the perfect house, a loving husband, and a beautiful little girl called Emily. She’d have it all if it wasn’t for Jen, her husband’s ex-wife who just won’t leave them alone. Then Natasha returns home one day to find her husband and Emily gone without trace. Desperate to get her daughter back, Natasha will do anything even if it means accepting an offer of help from Jen.

Gemma Ballantine is getting ready for work one morning when her eldest child comes running down the stairs saying the words every mother dreads. The front door is open. And her six-year-old daughter has disappeared. Frantic with fear, Gemma starts a nail-biting search for her little girl. After what feels like forever, her mother-in-law, Diane, finds Katie wandering lost a few streets away. Relieved to have her youngest child back in her arms, breathing in the sweet scent of her hair, Gemma thinks the nightmare is over. But then her perfect family starts to fall apart....

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.

Dear Elizabeth, I've been watching you. I hope to see you...soon. Liz Cafferky is on the up. Rescued from her dark past by the owner of a drop-in centre for older men, Liz soon finds herself as the charity's face - and the unwilling darling of the Dublin media. Amidst her claustrophobic fame, Liz barely notices a letter from a new fan. But then one of the centre's clients is brutally murdered, and Elizabeth receives another, more sinister note. Running from her own ghosts, Liz is too scared to go to the police.

My husband was not a monster. No matter what they say.... The day my husband, Michael, stepped in front of a lorry after being questioned by the police, my world fell apart. He was devoted to me and our six-year-old daughter. But they’d connected him to the disappearance of a young mother from our tiny village.