Six years ago, Evie Cormac was found hiding in a secret room in the aftermath of a brutal murder. But nobody has ever discovered her real name or where she came from, because everybody who tries ends up dead. Forensic Psychologist Cyrus Haven believes the truth will set Evie free. Ignoring her warnings, he begins to dig into her past, only to disturb a hornet's nest of corrupt and powerful people who have been waiting to find Evie - the final witness to their crimes. Unbeknownst to him, Cyrus is leading them straight to Evie. The truth will not set her free. It will get them killed.

Six years ago, Evie Cormac was discovered, filthy and half starved, hiding in a secret room in the aftermath of a shocking crime. Now approaching adulthood, Evie is damaged and self-destructive and has never revealed her true identity. Forensic psychologist Cyrus Haven, a man haunted by his own past, is investigating the death of champion figure skater Jodie Sheehan. When Cyrus is called upon to assess Evie, she threatens to disrupt the case and destroy his ordered life.

Childhood sweethearts William and Mary have been married for 60 years. William is a celebrated surgeon, Mary a devoted wife. Both have a strong sense of right and wrong. This is what their son, Joe O'Loughlin, has always believed. But when Joe is summoned to the hospital with news that his father has been brutally attacked, his world is turned upside down. Who is the strange woman crying at William's bedside, covered in his blood - a friend, a mistress, a fantasist or a killer? 

When Sienna Hegarty turns up at his family home one night, covered in blood and frozen in shock, psychologist Joe O'Loughlin finds himself drawn deep into her world, trying to unearth the dark secrets her mind has buried. The police find a major piece of the puzzle at Sienna’s house: her father, a retired cop, is face-down in a pool of his own blood, his throat slashed and his skull caved in. The blood covering Sienna was his.

When Piper and her friend Tash disappeared, there was a huge police search, but they were never found. Now Tash, reaching breaking point at the abuse their captor has inflicted on them, has escaped, promising to come back for Piper. Clinical psychologist Joe O'Loughlin and his stalwart companion, ex-cop Vincent Ruiz, force the police to re-open the case after Joe is called in to assess the possible killer of a couple in their own home and finds a connection to the missing girls.

Joseph O'Loughlin appears to have the perfect life: a beautiful wife, a loving daughter, and a successful career as a clinical psychologist. But nothing can be taken for granted. Even the most flawless existence is only one loose thread away from unravelling. All it takes is a murdered girl, a troubled young patient - and the biggest lie of his life.

Hannah has done everything to make sure her life is safe and secure. A long way from her unstable childhood growing up in foster care, she’s content with her sweet, little, messy apartment and her satisfying job as a social worker. She quietly worries that, aged 36, she might never fall in love. But otherwise her life is where she wants it to be. Until, encouraged by her best friend to join a dating app, she meets Alex. He’s irresistibly handsome. He loves the same music as her. The same food as well. 

Marnie Logan often feels like she's being watched. Nothing she can quite put her finger on - a whisper of breath on the back of her neck, or a shadow in the corner of her eye - and now her life is frozen. Her husband Daniel has been missing for more than a year. Depressed and increasingly desperate, she seeks the help of clinical psychologist Joe O'Loughlin. Joe is concerned by Marnie's reluctance to talk about the past, but then she discovers a book packed with pictures, interviews with friends, former teachers, old flames and workmates Daniel was preparing for her birthday.

Detective Inspector Vincent Ruiz is lucky to be alive. A bullet in the leg, another through the hand, he is discovered clinging to a buoy in the River Thames, losing blood and consciousness fast. It takes six days for him to come out of his coma, and when he does, his nightmare is only just beginning. Because Vincent has no recollection of what happened, and nobody believes him.

A naked woman is perched on the edge of Clifton Suspension Bridge weeping into a mobile phone. Clinical psychologist Joseph O'Loughlin is only feet away, desperately trying to talk her down. She whispers, 'you don't understand,' and jumps. Later, Joe has a visitor - the woman's teenage daughter, a runaway from boarding school. She refuses to believe that her mother would have jumped off the bridge - not only would she not commit suicide, she is terrified of heights.

When I arrive unannounced at my husband's studio in need of a shoulder to cry on after hearing that my best student, Alex, has died, I see a pair of wineglasses drying by the sink, and my deepest fear is confirmed: my husband is having an affair. Most women would fall to their knees in tears and throw him out of the house - but I just can't bring myself to do it. Instead, I go home and cook a healthy dinner for our children, walk the dog, and unload the dishwasher without complaint. I need this marriage to work to protect a terrible secret of my own....

Police detective Ali Barba receives an urgent letter from her estranged friend Cate. Startled by the letter's alarming tone and eager to atone for egregious past actions, Ali meets Cate at their high-school class reunion. The obviously pregnant Cate begs Ali to stop those who are trying to take her baby. But the plot takes a bizarre twist when a careening car kills Cate - and Ali discovers the truth about Cate's pregnancy.

Sami Macbeth is not a master criminal. He's not even a minor one. He's not a jewel thief. He's not a safe-cracker. He's not an expert in explosives. Sami plays guitar and wants to be a rock god but keeps getting side-tracked by unforeseen circumstances. Fifty-four hours ago Sami was released from prison. Thirty-six hours ago he slept with the woman of his dreams at the Savoy. An hour ago his train blew up. Now he's carrying a rucksack through London's West End and has turned himself into the most-wanted terrorist in the country.

Pete Riley answers the door one morning and lets in a parent's worst nightmare. On his doorstep is Miles Lambert, a stranger who breaks the devastating news that Pete's son, Theo, isn't actually his son - he is the Lamberts', switched at birth by an understaffed hospital while their real son was sent home with Miles and his wife, Lucy. For Pete, his partner Maddie, and the little boy they've been raising for the past two years, life will never be the same again.

Selena Murphy is commuting home on the train when she strikes up a conversation with a beautiful stranger in the next seat. The woman introduces herself as Martha and soon confesses that she’s been stuck in an affair with her boss. Selena, in turn, confesses that she suspects her husband is sleeping with the nanny. When the train arrives at Selena’s station, the two women part ways, presumably never to meet again. Then the nanny disappears.