Fresh from a high-profile case in the Paris fashion world, elite forensic psychologist and criminal profiler Dr Alexander Gregory receives a call from the New York State Homicide Squad. The wife of a notorious criminal has been admitted to a private psychiatric hospital and can no longer testify in his upcoming trial. Without her, their case will collapse, but amid reports that the staff are as unpredictable as their patients, who can the police trust? 

After an elite criminal profiling unit is shut down amid a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psychiatrist Doctor Alexander Gregory has a reputation for being able to step inside the darkest minds to uncover whatever secrets lie hidden there, and soon enough he finds himself drawn into the murky world of murder investigation. In the beautiful hills of County Mayo, Ireland, a killer is on the loose. Panic has a stranglehold on its rural community, and the Garda are running out of time. 

When DI Rowan Jackman and DS Evans are told that the IT boss has disappeared, they soon suspect foul play. Orla Cracken, known as Orac, is no ordinary techie; she was once a field agent traveling abroad undercover, working for the government. Meanwhile DC Robbie Melton discovers that two people, both urban explorers, have mysteriously disappeared whilst out exploring abandoned buildings. One went missing at a disused airfield, but was it a military base, or was it civilian?

When a woman is murdered in Blackdown village, newsreader Anna Andrews is reluctant to cover the case. Anna’s ex-husband, DCI Jack Harper, is suspicious of her involvement, until he becomes a suspect in his own murder investigation. Someone is lying, and some secrets are worth killing to keep.

Detective Chief Inspector Ryan retreats to Holy Island seeking sanctuary when he is forced to take sabbatical leave from his duties as a homicide detective. A few days before Christmas, his peace is shattered, and he is thrust back into the murky world of murder when a young woman is found dead amongst the ancient ruins of the nearby priory. When former local girl Dr. Anna Taylor arrives back on the island as a police consultant, old memories swim to the surface, making her confront her difficult past.

After a long and eventful winter, DCI Ryan and his team are looking forward to the joys of spring. But, when one of their colleagues is shot dead on her own doorstep and the brass think it’s an inside job, Ryan finds himself drafted in to investigate. He’s barely scratched the surface when reports flood in of a terror explosion at Durham Cathedral. Chaos descends on the sleepy, historic city and, when the smoke clears, they find a priceless artefact that once belonged to Saint Cuthbert is missing.  

A secret worth dying for is a secret worth killing...When a violent storm uncovers the remains of an unknown young woman, long buried among the sand dunes, DI Tom Janssen must piece together fragmentary evidence to determine how she came to be there. In the years she lay undiscovered, several young women have disappeared, and as the team works through the possibilities, they come to an uncomfortable conclusion...Is a serial killer stalking coastal Norfolk? Each missing person had a story. Each of them had enemies. Some were more dangerous than others...

When a 10-year-old girl turns up on DCI Ryan’s doorstep to tell him she’s witnessed a murder, he has no idea he’s about to step into his most spellbinding case yet. The circus has rolled into Newcastle upon Tyne, bringing with it a troupe of daring acrobats, magicians and jugglers - and one of them is a killer. Ryan and his team must break through their closed ranks to uncover a secret which has lain buried for eight years, before the killer strikes again - this time, to silence the only living witness.... 

When an old man is burned alive in a sleepy ex-mining village, Detective Chief Inspector Ryan is called in to investigate. He soon discovers that, beneath the facade of a close-knit community, the burn from decades-old betrayal still smoulders. When everyone had a motive, can he unravel the secrets of the past before the killer strikes again? Meanwhile, back at Northumbria CID, trouble is brewing with rumours of a mole in Ryan’s department. With everyone under suspicion, can he count on anybody but himself?  

After uncovering a fresh wave of corruption within the ranks of Northumbria CID, Detective Chief Inspector Ryan was looking forward to an uneventful summer. But, when a young woman is shot dead on the remote army ranges of the Northumberland National Park, Ryan is called in to investigate. Meanwhile, violent crimes are being committed across sites of historic importance in the North East, the perpetrator leaving only a graffitied symbol as their calling card. As the body count rises, Ryan and his team must unravel the mystery behind its meaning - before it's too late....

When Detective Kim Stone is called to the home of Samantha Brown, she finds the young woman lying in bed with her throat cut and a knife in her hand. With no sign of forced entry or struggle, Kim rules her death a tragic suicide. But a visit to Samantha’s parents rings alarm bells for Kim - there’s something they’re not telling her. And, when she spots a clue in a photograph, Kim realizes she’s made a huge mistake. Samantha didn’t take her own life, she was murdered. 

When Matt Ballard was starting out his career, three boys were murdered in the same area, the remote and bleak Gibbet Fen. When the main suspect was killed in a hit-and-run, the killings stopped. But Matt was not satisfied that the real murderer had been caught. Over 25 years later, Matt gets a photo in an unmarked envelope. It's of the Gibbet Fen crime scene. And the picture was taken before the murder took place. More photos arrive, relating to the historic murders, as well as intimate pictures of Matt's very secret private life.

After a turbulent time, DCI Ryan's life is finally beginning to return to normal, and he's looking forward to spending an uneventful Easter bank holiday weekend with his fiancée. Then, on Good Friday morning, he is called out to a crime scene at one of the largest cemeteries in Newcastle. The body of a redheaded woman has been found buried in a shallow grave, and the killer has given her wings, like an angel. Soon another woman is found at a different cemetery, followed quickly by another.

Hell has unleashed a demon - and he's coming for you.... Detective Chief Inspector Ryan's worst nightmare has just become a reality. Notorious serial killer The Hacker has escaped prison and kidnapped one of his best detectives from her own home. His brutality is the stuff of legend - Ryan lost his sister and nearly his own life bringing the man to justice first time around. Can Ryan do it again to save his friend? There's a nationwide manhunt underway but the trail has gone cold and fear spreads like a virus.

After his climactic battle with notorious serial killer The Hacker, DCI Ryan is spending the summer with his fiancée within the grounds of Cragside, a spectacular Bavarian-style mansion surrounded by acres of woodland. When they are invited to attend the staff summer party - a Victorian murder mystery evening - it's all a joke until the lights go out and an elderly man is found dead. It looks like an unfortunate accident but, as the dead man's life begins to unfold, Ryan and his team of detectives realise that all is not as it appears.