In 1973 Jane Tennison, aged 22, leaves the Metropolitan Police Training Academy to be placed on probationary exercise in Hackney, where criminality thrives. We witness her struggle to cope in a male-dominated, chauvinistic environment, learning fast to deal with shocking situations with no help or sympathy from her superiors. Then comes her involvement in her first murder case. No one witnessed the savage beating of a tragic young girl who, the postmortem reveals, was pregnant when she died.

When a prostitute is found murdered in her bedsit, the Metropolitan police set to work finding the perpetrator of this brutal attack. DNA samples lead them straight to known-criminal George Marlow. The police think they've found their man, but things are not quite what they seem....

Lieutenant Lorraine Page once had everything - a devoted husband, two beautiful daughters and an impressive career with the Homicide Squad. It's impossible to believe that she could be thrown out of the police force and end up on Skid Row. Without Lorraine, her colleagues struggle on, as the hunt for a nightmare serial killer spirals into an all-out search for a missing witness: a victim who escaped. But Lorraine Page is about to be brought right back into that world again....

Barfield Prison is one of the toughest high-security prisons in England, housing the country's most dangerous criminals. And when an inmate is found dead in his cell, a riot breaks out, forcing the authorities to investigate a potential murder. Despite being Barfield's youngest ever female Governor, Helen Hewitt is seen as the best woman for the job. But with a prison full of corrupt and suspicious officers, restless inmates and a broken system, Helen has her work cut out - and no allies to help her....

A life-and-death hostage situation at Barfield High Security prison brings Governor Helen Hewitt back to her old stomping ground. But things have changed at Barfield. A new, highly dangerous prisoner poses a threat to the peace, and when discord boils over, the prisoners join forces in an audacious escape attempt. As violence erupts among the officers and the inmates, Hewitt must once again restore order. Before it's too late.

A young girl is found dumped on the banks of the Thames. Horrifically mutilated and drained of blood, her death is an ominous mirror image of an unsolved 1940s case in Los Angeles known as 'The Black Dahlia'. Detective Inspector Anna Travis must race against time to catch this copycat killer, dubbed 'The Red Dahlia' from the flower his victim wore in her hair. But there are no suspects and a media frenzy is spiralling out of control.

Facing life alone, they turned to crime together. Dolly Rawlins, Linda Perelli and Shirley Miller are left devastated when their husbands are killed in a security van heist that goes disastrously wrong. When Dolly discovers her husband's bank deposit box containing a gun, money and detailed plans for the hijack, she has three options. She could hand over the ledgers to the Detective. She could hand them over to the thugs who want to take over Harry's turf. Or, she and the other widows could finish the job their husbands started....

Young Anna Travis has been assigned to her first murder case - a series of killings that has shocked even the most hardened of detectives. They started eight years ago – now the body count is up to six. The method of killing is identical, the backgrounds of the girls identical - all drug-users and prostitutes. Then a seventh body is found. The modus operandi is the same - but the victim is a young student with the 'face of an angel'. The profile of the murderer has changed dramatically.

Dedicated, intuitive and utterly obsessive, DCI James Langton is ruthless in his pursuit of a gang of illegal immigrants, killers of a young prostitute. When he is horrifically, almost fatally injured by one of them, it falls upon DI Anna Travis to put her own career on hold as she nurses him through his intense frustration and desperation to bring his would-be murderer to justice.

It is late at night on a notorious council estate in east London. A van - garishly painted with a grinning clown's face on the side - is being driven erratically. When the police pull over the driver to question him, they discover, inside the van, the body of a young woman. A murder suspect . . . an arrest . . . a confession . . . A case done and dusted? But their suspect claims his victim is not his first, but his third.

A motorway service station on the M1: dimly lit, run down, poorly supervised, flickering lights, dark corners; a favourite stopover for long-distance lorry drivers on their way up north from London. Behind it, a body is found in a ditch, that of a girl barely out of her teens. She appears to have no family, no friends, no connections anywhere. Other girls have gone missing in the vicinity and no one has stepped forward to claim them.

When Amy arranges a sleepover with a school friend one weekend, neither parent sees the need to be in touch with her. Saturday, Sunday, Monday morning pass before Lena - seething from her first, unexpectedly confrontational, meeting with Marcus's divorce lawyer - phones Amy. Straight to Amy's voicemail. She must be in lessons. Lena sends a text. She waits. No reply, no contact whatsoever.

Under the watchful eye of Detective Chief Superintendent James Langton, Anna is given her first case. But is it a full-blown murder investigation or purely a missing person's case? An ominous pool of blood and no victim lead Anna on a desperate hunt for a man who has disappeared without trace.As Anna becomes obsessed with seemingly irrelevant details, Langton fears that she is losing control of the case. They still have no body and Anna is under increasing pressure to make an arrest....

Alexander Fitzpatrick is one of the most wanted men in the Western world. A Howard Marks character, but far more dangerous, his wealth, accrued through drug-trafficking, runs into millions. For the past 10 years there has been no sighting of him. Has he gone to ground using an alias, or is he dead?

When an ex-police officer from the murder squad is found shot in a dank squat, Anna Travis is pulled onto the case. As the body count rises and the investigation becomes ever more complex, suspicion falls on Fitzpatrick.

When Amanda is found brutally murdered, DCI James Langton's enquiry discovers the sad truth behind her successful façade. Addicted to drugs and starvation diets, she'd almost died from a botched abortion. Meanwhile, DI Anna Travis is up for promotion, but Langton is blocking her, accusing her of professional misconduct. This latest case could make or break Anna's career.