M. J. Arlidge

Those are the only words on the phone call. Then they hang up. Surely, a prank? A mistake? A wrong number? Anything but the chilling truth... That someone is watching, waiting, ready to take your life in one hour.

But why?

The job of finding out falls to DI Helen Grace: a woman with a track record in hunting killers. However, this is one case where the killer seems to always be one step ahead of the police and the victims.

With no motive, no leads, no clues - nothing but pure fear - an hour can last a lifetime...

Book 9 in the DI Helen Grace series.

A silent killer stalks the city, targeting those home alone at night, playing a deadly game of cat and mouse with the victims.

As panic spreads, Detective Inspector Helen Grace leads the investigation, but is herself a hunted woman, her every step shadowed by a ruthless psychopath bent on revenge.

As she tracks the murderer, Grace begins to suspect there is a truly shocking home truth that connects these brutal crimes. But what she will find is something more twisted than she could ever suspect...

Book 11 in the DI Helen Grace series.

Two people are abducted, imprisoned, and left with a gun. Only one walks away alive. It's a game more twisted than any Detective Helen Grace has ever seen. If she hadn't spoken with the shattered survivors herself, she almost wouldn't believe them. But as more people go missing, nothing will be more terrifying than when it all starts making sense....  Book 1 of series.

They both share the same secret:
neither of them are who they say they are.

They are among only nine criminals in the UK who have been granted lifelong anonymity, for their own safety, because of their terrible crimes.

But what if someone exposed their true identities to the families of their victims, who are desperate for revenge?

Probation officer Olivia Campbell is caught in the crossfire of this crisis - and as the search for the mole behind it all intensifies, so too does the hunt for the vigilante killers let loose by the leaks...

When local teenager Naomi goes missing, Detective Inspector Helen Grace is her only hope.

But with the police force under fire from all sides as a gang war grips the city, Helen will have to defy direct orders to search for her.

Helen's secret investigation follows a disturbing trail of missing girls disappearing from the streets. She's the only person looking for them. And with the clock still ticking, she's about to have more enemies than time working against her...

Book 12 in the Helen Grace series.

Detective Inspector Helen Grace has spent her whole life hiding. Behind the badge. Behind her reputation as one of the country's best detectives. Until - framed for murder - she became one of its most high-profile prisoners. Now there is nowhere to run. Nowhere to hide. Because HMP Holloway is a place of dark days and long nights and Helen must face her nightmare alone. But then a carefully mutilated body is found in a locked cell. Now Helen must find a ruthless serial killer. Before the killer finds her..  Book 6 of series.

For DI Helen Grace, three raging fires in the dead of night announce the arrival of an evil she has never encountered before. Because this is no firestarter seeking sick thrills, but a series of calculating acts of murder. But what's driving the killer? And who will be next? A powder keg of fear, suspicion and dread has been laid. Now all it needs is a spark to set it off...  Book 4 of series.

Called to a murder at a Southampton nightclub, D I Helen Grace discovers she knows the victim - a man from the double life she has concealed from her superiors. Helen is determined to find his murderer and when a new victim is found, Helen works around the clock to stop her life unravelling. She'll do anything to solve this case - but dare she reveal her own darkest secrets and lose everything? Contains graphic scenes.  Book 5 of series.

A crimewave sweeps through the city and no one is safe. An arson at the docks. A carjacking gone wrong. A murder in a country park. What connects all these crimes without causes, which leave no clues?

Detective Inspector Helen Grace faces the rising tide of cases which threatens to drown the city. But each crime is just a piece of a puzzle which is falling into place.

And when it becomes clear just how twisted and ingenious this web of crime is, DI Grace will realise that it may be impossible to stop it...

Book 10 in the DI Helen Grace series.