Bryan Duffy is Witness X - a government agent implicated in a national scandal and banished to Spain until the agenda can be moved on. But when North Korean hit men attack a seeming innocent on the streets of London, Duffy is called back to the fold. He is tasked with finding the woman's assailants and bringing them to justice. Why has the woman been attacked? Duffy investigates and finds himself sucked into a whirlwind of action and mayhem that is particularly well suited to his special set of skills....

Mark Dawson's Group Fifteen Files. Quick, lightning-paced, action.

They call him 'Scorpion'. No-one knows his real name, and the only people who have seen his face are dead. He works for the highest bidder, and he's never missed a target.

The assassin appears in London with the name of an investigative reporter on his list. But has Scorpion met his match? The reporter has a protector - John Milton. And Milton might be the only man in the world more dangerous than him.

Nine months ago, Beatrix Rose had her family brutally taken from her. Now all that matters is getting her daughter back. And Beatrix is no ordinary mother - she’s a skilled assassin who will do whatever it takes to find her child. Danny Nakamura deserted his post in Vietnam and disappeared into Hong Kong’s Walled City, vowing never to go home again. Decades later, his health failing, he’s suddenly found a reason to return to LA: the discovery of a daughter he never knew he had. But getting home won’t be easy....

Is John Milton on the path to redemption or the road to revenge? John Milton has done some bad things in his life. Very bad things. Now he’s looking for ways to make amends. But trouble always seems to be looking for him. Heading from San Francisco to Las Vegas, Milton’s solo road trip takes an unexpected turn when he picks up Jessica Russo, a young woman in distress at the side of the road. She urgently needs a ride and he’s happy to help her out. But what starts out as a simple favour quickly becomes something more sinister....

Meet John Milton. He considers himself an artisan. A craftsman. His trade is murder. Milton is the man the government sends after you when everything else has failed. Ruthless. Brilliant. Anonymous. Lethal. You wouldn't pick him out of a crowd but you wouldn't want to be on his list. In this second dip into his case files (see 1000 Yards for a further novella), Milton is sent to Italy to investigate the death of a colleague from Group 15.

Beatrix Rose has worked her way through her Kill List. Four are dead and just two remain. But now her enemies know she has them in her sights. The hunter becomes the hunted. In a thrilling conclusion to the breakneck trilogy, Beatrix and her daughter must fight them in North Africa, New York and finally in the swamps of North Carolina. It's a lightning-paced roller-coaster of action that pits a deadly assassin against the might of the most powerful private army on the planet.

Belfast-born Jimmy Walker is a career criminal, desperate to leave the world of organised crime behind. He’s made just enough money to think about going straight. He wants to be a family man. He wants to stay alive for his wife and son. He wants to be the man they deserve. He reluctantly agrees to one final job with the intention that it will be his last. Little does Jimmy know that he’s been set-up. The sins of his past are about to catch up with him.    

They gunned down her husband and kidnapped her daughter, and now the debt needs to be repaid. It's a blood feud she didn't start but is going to finish. Beatrix has already crossed one name off her Kill List. Her second target is a mercenary being held hostage by Somali terrorists. Can she infiltrate the most dangerous failed state on the planet and scrub him off the List, too?

Ciudad Juárez, Mexico, is the most dangerous city in the world. And when a mission to break the local cartel’s grip goes wrong, Isabella Rose, the Angel, finds herself on the wrong side of prison bars. Fearing the worst, Isabella plays her only remaining card... 

She does Britain's dirty work, but this time she needs help. Beatrix Rose, meet John Milton.... Beatrix Rose has a knack for making the British government's problems go away. When the assassin is sent to Venezuela to track down a missing scientist, she meets a contact who knows the lay of the land: none other than John Milton. As the state-sanctioned assassin and the special forces soldier team up in South America, they'll do more than capture a missing scientist....

John Milton hasn't seen Elijah Warriner for three years. The last time they met, Milton's efforts to keep the boy safe didn't go exactly to plan. Now Elijah is a promising boxer, preparing for the bout that will take him to the big time. Milton decides that he will spend the week before Christmas in London so that he can watch the fight. But Elijah's burgeoning fame has brought him to the attention of old acquaintances with long memories and grudges to bear.

Beatrix Rose has been betrayed. Her husband has been murdered and her daughter, Isabella, abducted. She flees to the Hong Kong underworld to plot her revenge. Those who wronged her will pay. Beatrix is the most dangerous woman you’ve ever met. She was an assassin for The Firm, the beyond top secret agency that did the dirty work for the British Secret Services. She is lethal. Ethically flexible. Totally ruthless. And you know what they say about payback.

Isabella Rose, the Angel, is used to surprises, but being abducted is an unwelcome novelty. She's relying on Michael Pope, the head of the top-secret Group Fifteen, to get her back. When ISIS get involved, the situation becomes even bleaker. Isabella's abductors are in turn abducted, and she finds herself trapped in Raqqa, the capital of the self-styled caliphate. Meanwhile, Pope has problems of his own: a new danger has emerged from the shadows and is threatening both him and his family.

When a Russian defector is assassinated in a sleepy English seaside town, Group Fifteen agents John Milton and Michael Pope find themselves in a rush to uncover the culprits and bring them to justice. Their investigation leads them to Moscow and a confrontation with Directorate S, the agency responsible for seeding Russian sleeper agents around the world. When lies and double crossing mean that no-one is what they seem, the two agents - alone and without backup - struggle to achieve their goals under the most dangerous of circumstances.  

London, 1940: The Luftwaffe blitzes London every night for 57 nights. Houses, shops, and entire streets are wiped from the map. The underworld is in flux: The Italian criminals who dominated the West End have been interned, and now their rivals are fighting to replace them. Meanwhile, hidden in the shadows, the Black-Out Ripper sharpens his knife and sets to his grisly work.