Monday, the lowest point of the week. A day of dark impulses. A day to snatch a child from the streets ... The abduction of five-year-old Matthew Farraday provokes a national outcry and a desperate police hunt. And when a picture of his face is splashed over the newspapers, psychotherapist Frieda Klein is left troubled: one of her patients has been relating dreams in which he has a hunger for a child. A child he can describe in perfect detail, a child the spitting image of Matthew. Detective Chief Inspector Karlsson doesn't take Frieda's concerns seriously until a link emerges with an unsolved child abduction twenty years ago and he summons Frieda to interview the victim's sister, hoping she can stir hidden memories. Before long, Frieda is at the center of the race to track the kidnapper. But her race isn't physical. She must chase down the darkest paths of a psychopath's mind to find the answers to Matthew Farraday's whereabouts. And sometimes the mind is the deadliest place to lose yourself.

A London social worker makes a routine home visit only to discover her client serving afternoon tea to a naked, decomposing corpse. With no clues as to the dead man’s identity, Chief Inspector Karlsson again calls upon Frieda for help. She discovers that the body belongs to Robert Poole, con man extraordinaire. But Frieda can’t shake the feeling that the past isn’t done with her yet. Did someone kill Poole to embroil her in the investigation? And if so, is Frieda herself the next victim?

Psychotherapist Frieda Klein finds she has an unusually personal connection with DCI Karlsson's latest case. She is no longer working with him in an official capacity, but when her niece befriends Ruth Lennox's son, Ted, she finds herself in the awkward position of confidante to both Karlsson and Ted. When it emerges that Ruth was leading a secret life, her family closes ranks and Karlsson finds he needs Frieda's help more than ever before. But Frieda is distracted. Having survived an attack on her life, she is struggling to stay in control and when a patient's chance remark rings an alarm bell, she finds herself chasing down a path that seems to lead to a serial killer who has long escaped detection. Or is it merely a symptom of her own increasingly fragile mind? Because, as Frieda knows, every step closer to a killer is one more step into a darkness from which there may be no return . . .

Two crimes, generations apart . . . Twenty years ago teenager Frieda Klein was brutally attacked in her own home. No one believed her - not the police, not her mother, not her friends. She left town, trained as a psychologist and never went back. Now an old classmate has shown up. She wants help with her daughter, who claims to have been attacked at home. An attack eerily similar to the one on Frieda. No one else believes the girl's story. Now - with a school reunion in the offing - Frieda returns to the darkness she fled. To the small town which refused to help her and which hides a terrible secret. Because someone at the reunion knows what happened. And they'll stop at nothing to prevent Frieda discovering the truth . . .

When a bloated corpse is found floating in the River Thames the police can at least sure that identifying the victim will be straightforward. Around the dead man's wrist is a hospital band. On it are the words Dr F. Klein. But psychotherapist Frieda Klein is very much alive. And, after evidence linking her to the murder is discovered, she becomes the prime suspect. Unable to convince the police of her innocence, Frieda is forced to make a bold decision in order to piece together the terrible truth before it's too late either for her or for those she loves.

Thirteen years ago eighteen-year-old Hannah Docherty was arrested for the brutal murder of her family. It was an open-shut case and Hannah's been incarcerated in a secure hospital ever since. When psychotherapist Frieda Klein is asked to meet Hannah and give her assessment of her, she reluctantly agrees. What she finds horrifies her. And Frieda is haunted by the thought that Hannah might be as much of a victim as her family; that something wasn't right all those years ago. And as Hannah's case takes hold of her, Frieda soon begins to realize that she's up against someone who'll go to any lengths to protect themself.

Lover of London, gifted psychologist, frequent police consultant—Frieda Klein is many things. And now she's a person of interest in a murder case. A body has been discovered in the most unlikely and horrifying of places: beneath the floorboards of Frieda's house. The corpse is only months old, but the chief suspect appears to have died more than seven years ago. Except as Frieda knows all too well, he's alive and well and living in secret. And it seems he's inspired a copycat... As the days pass and the body count rises, Frieda finds herself caught in a fatal tug-of-war between two killers: one who won't let her go, and another who can't let her live.

Now the final book in this extraordinary series is here. And it's an ending you'll never forget. A decade ago, psychologist Frieda Klein was sucked into the orbit of Dean Reeve—a killer able to impersonate almost anyone, a man who can disappear without a trace, a psychopath obsessed with Frieda herself. In the years since, Frieda has worked with—and sometimes against—the London police in solving their most baffling cases. But now she's in hiding, driven to isolation by Reeve. When a series of murders announces his return, Frieda must emerge from the shadows to confront her nemesis. And it's a showdown she might not survive. This gripping cat-and-mouse thriller pits one of the most fascinating characters in contemporary fiction against an enemy like none other. Smart, sophisticated, and spellbinding, it's a novel to leave you breathless.