Mark Billingham

Teenager Luke Mullen was last seen getting into a car with an older woman. No one can understand why he has disappeared. His father - a former police officer - knows all too well that the longer he is missing, the more likely he is to turn up dead.

Then Luke's parents receive an anonymous video. It shows their son, eyes wide with terror, as a man advances towards him holding a syringe.

DI Tom Thorne recognises a psychopath when he sees one. And the scene on the tape chills him to the bone - he knows that a child's life hangs in the balance, and that every minute counts...

How do you catch a killer who is yet to kill?

We've all heard about the signs: coldness, cruelty, mistreatment of animals. DI Tom Thorne knows the psychological profile of a psychopath all too well, so when pets start disappearing on suburban London streets, he sees a chance to stop a future murderer.

Others are less convinced, so Thorne relies on DI Nicola Tanner to help him solve the case, before the culprit starts hunting people. The journey brings them face to face with a killer who will tear their lives apart.

Book 15 in the Tom Thorne series.

It's only ten days since Douglas Remfry's release from prison, having served seven years for rape, and now he's dead: naked on a bare mattress in a grubby north London hotel room, his head hooded and his hands tied with a brown leather belt.

Someone knew he was coming out. Someone wanted to mete out some punishment of his own.

And when a second sex offender is found dead, DI Tom Thorne knows he has a vicious, calculating vigilante on his hands...

Book 3 in the DI Tom Thorne series.

Tom Thorne has it all.

In Nicola Tanner and Phil Hendricks, Thorne has good friends by his side. He finally has a love life worth a damn and is happy in the job to which he has devoted his life...

He has everything to lose.

Hunting the woman responsible for a series of grisly murders, Thorne has no way of knowing that he will be plunged into a nightmare from which he may never wake.

And he'll do anything to keep it.

Finally, Thorne's past has caught up with him and a ruinous secret is about to be revealed. If he wants to save himself and his friends, he must do the unthinkable.

It was a vicious, calculated murder. The killer selected his victim at Euston station, followed her home on the tube, strangled her to death in front of her child. At the same time, killed in the same way, a second body is discovered at the back of King's Cross station. And this grisly event eerily echoes the murder of two other women, stabbed to death months before on the same day.

It is DI Tom Thorne who sees the link and comes to the horrifying conclusion. This is not a serial killer the police are up against.

This is two of them - and two killers are way more deadly than one...

Book 2 in the DI Tom Thorne series.

Sarah thinks of herself as a normal single mum. It's what she wants others to think of her. But the truth is, she needs something new, something thrilling.

Meanwhile, DI Tom Thorne is investigating a woman's suicide, convinced she was driven to do it by a man who preys on vulnerable women.

A man who is about to change Sarah's life.

Book 16 in the Tom Thorne series.

The targeted murder of four officers is only the first in a series of attacks that leaves police scared, angry and, most disturbingly of all, vengeful.

As Tom Thorne and Nicola Tanner dig into the reasons for the violence, a deeper darkness begins to emerge: the possibility that these murders are payback. The price paid for an unspeakable betrayal.

To uncover the truth, Thorne will be forced to question everything he stands for. He can trust nobody, and the shocking secrets revealed by one terrible night will fracture his entire world.

Book 19 in DI Tom Thorne series.