Stuck in a traffic jam, Nicki Clements sees a face she hoped never to see again. It's definitely him, the same police officer, stopping each car on Elmhirst Road. Keen to avoid him, Nicki does a U-turn and makes a panicky escape. Or so she thinks. The next day, Nicki is pulled in for questioning in connection with the murder of Damon Blundy, controversial newspaper columnist and resident of Elmhirst Road. Nicki can't answer any of the questions detectives fire at her. She has no idea why the killer used a knife in such a peculiar way, or why 'he is no less dead' was painted on Blundy's study wall.

When her plane is delayed overnight, Gaby Struthers finds herself forced to share a hotel room with a stranger: a terrified young woman named Lauren Cookson - but why is she scared of Gaby in particular? Lauren won't explain. Instead, she blurts out something about an innocent man going to prison for a murder he didn't commit, and Gaby soon suspects that Lauren's presence on her flight can't be a coincidence. Because the murder victim is Francine Breary, the wife of the only man Gaby has ever truly loved. Tim Breary has confessed, and even provided the police with evidence. The only thing he hasn't given them is a motive.

When Amber Hewerdine consults a hypnotherapist as a desperate last resort, she doesn't expect that anything much will change. She doesn't expect it to help with her chronic insomnia. And she doesn't expect to hear herself, under hypnosis, saying words that mean nothing to her: 'Kind, cruel, kind of cruel'. These are words she has seen somewhere before, if only she could remember where….

It's 1.15 a.m. Connie Bowskill should be asleep. Instead, she's logging on to a property website in search of a particular house: 11 Bentley Grove, Cambridge. She knows it's for sale; she saw the estate agent's board in the front garden less than six hours ago. Soon Connie is clicking on the 'Virtual Tour' button, keen to see the inside of 11 Bentley Grove and put her mind at rest once and for all. But she finds herself looking at a scene from a nightmare.

Fliss Benson is a TV producer struggling to deal with a personal tragedy in her own life. She receives at work an anonymous card which consists of 16 numbers arranged in four rows of four. These numbers mean absolutely nothing to her. At the same time, she is handed a particularly unwelcome assignment: she has to work on a documentary about cot death and three mothers accused (wrongly, it seems) of murder: Helen Yardley, Sarah Jaggard and Rachel Hines.

Ruth Bussey knows what it means to be in the wrong and to be wronged. She once did something she regrets, and her punishment nearly destroyed her. Now Ruth is rebuilding her life, and has found a love she doesn't believe she deserves: Aidan Seed. Aidan is also troubled by a past he hates to talk about, until one day he decides he must confide in Ruth. He tells her that years ago he killed someone: a woman called Mary Trelease. Ruth is confused. She's certain she's heard the name before, and when she realises why it sounds familiar, her fear and confusion deepen....

She's only been gone two hours. Her husband, David, was meant to be looking after their two-week-old daughter. But when Alice Fancourt walks into the nursery, her terrifying ordeal begins, for Alice insists the baby in the cot is a stranger she's never seen before. With an increasingly hostile and menacing David swearing she must either be mad or lying, how can Alice make the police believe her before it's too late?

Three years ago, something terrible happened to Naomi Jenkins - so terrible that she never told anybody. Now Naomi has another secret - the man she has fallen passionately in love with, unhappily married Robert Haworth. When Robert vanishes without trace, Naomi knows he must have come to harm. But the police are less convinced, particularly when Robert's wife insists he is not missing. In desperation, Naomi has a crazy idea.

Pushed to breaking point, Cara Burrows flees her home and family and heads for a five-star spa resort. All she wants is space and time to think, far from everyone she knows. Instead she gets a shock in the middle of the night when she is given the key to a room that's already occupied - apparently by a father and daughter, who are equally shocked to be woken by a stranger. Back at reception, Cara gets an apology and the key to a new room, and she imagines the drama is over....

Justine thought she knew who she was until an anonymous caller seemed to know better.... After escaping London and a career that nearly destroyed her, Justine plans to spend her days doing as little as possible in her beautiful home in Devon. But soon after the move, her daughter, Ellen, starts to withdraw when her new best friend, George, is unfairly expelled from school.

All Beth has to do is drive her son to his Under-14s away match, watch him play, and bring him home. Just because she knows that her former best friend lives near the football ground, that doesn't mean she has to drive past her house and try to catch a glimpse of her. Why would Beth do that, and risk dredging up painful memories? She hasn't seen Flora Braid for 12 years. But she can't resist. She parks outside Flora's house and watches from across the road as Flora and her children, Thomas and Emily, step out of the car. Except.... 

Lady Athelinda Playford has planned a house party at her mansion in Clonakilty, County Cork, but it is no ordinary gathering. As guests arrive, Lady Playford summons her lawyer to make an urgent change to her will - one she intends to announce at dinner that night. She has decided to cut off her two children without a penny and leave her fortune to someone who has only weeks to live.... Among Lady Playford's guests are two men she has never met - the famous Belgian detective Hercule Poirot and Inspector Edward Catchpool of Scotland Yard.

Hercule Poirot is travelling by luxury passenger coach from London to the exclusive Kingfisher Hill estate. Richard Devonport has summoned him to prove that his fiancée, Helen, is innocent of the murder of his brother, Frank. There is one strange condition attached to this request: Poirot must conceal his true reason for being there from the rest of the Devonport family.  

Hercule Poirot's quiet supper in a London coffee house is interrupted when a young woman confides to him that she is about to be murdered. She is terrified, but begs Poirot not to find and punish her killer. Once she is dead, she insists, justice will have been done. Later that night, Poirot learns that three guests at a fashionable London hotel have been murdered, and a cufflink has been placed in each one's mouth. Could there be a connection with the frightened woman?

A trusted colleague and friend. A mother. A wife. Neve Connolly is all these things. She has also made mistakes: some small, some unconsciously done, some large, some deliberate. She is only human, after all. But now one mistake is spiralling out of control, and Neve is bringing those around her into immense danger. She can’t tell the truth. So how far is she prepared to go to protect those she loves? And who does she really know? And who can she trust? A liar. A cheat. A threat. Neve Connolly is all these things. Could she be a murderer?