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.  

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.

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....

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....

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... 

Beatrix has returned from Somalia with a fresh target in her sights. Bryan Duffy is in Iraq, surrounded by mercenaries, with no easy way to get to him and no easy way to get out. Will Duffy prove to be a challenge too far?

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.

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.

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?

Isabella Rose is on the run, hunted by the very people she had been hired to work for. Trained killer Isabella and former handler Michael Pope are forced into hiding in India and, when a mysterious informer passes them clues on the whereabouts of Pope's family, the prey see an opportunity to become the predators.

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....

New York isn't ready for Britain's most dangerous ex-assassin.... John Milton has finally found a place to escape the bloodshed: off-season Coney Island. No tourists. No special ops. Just peace and quiet. But when a local boy witnesses a grisly murder, Milton can't resist investigating. Milton uncovers a vicious drug kingpin and a group of crooked cops from a notorious precinct known as The Alamo. Against such dangerous foes, Milton's quest for redemption could come to an end.

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. But now, after ten years, he's had enough - there's blood on his hands and he wants out. Trouble is, this job is not one you can just walk away from. He goes on the run, seeking atonement for his sins by helping the people he meets along the way.

Bjorn Thorsson joined the Special Air Service to forget the horrors of his childhood. He killed for Queen and country, and he was good at it. He quits the army and settles down, looking for a quieter life. When his beautiful sister, Gudrun, finds herself in trouble with the owner of a hedge fund, Bjorn promises to get her out of danger. But there’s another factor in play. Group 15, a clandestine government agency, has plans for the financier, and Bjorn is in their way. Bjorn must outwit the Group in the streets of London and in the Highlands of Scotland if he is to protect his sister and survive.

John Milton's life is about to change. The former government assassin follows a lead to Manila that he hopes will transform everything. But things don't go to plan. He never expected to wake up in an unfamiliar hotel room beside a dead body. And, unfortunately for him, Milton doesn't remember a thing about the night before.... Thrown into a gruesome Filipino prison, he puts together the clues of his betrayal. With no allies and even less hope, Milton must use his wits to escape and take revenge....