The war on drugs has always been a dirty business. But there are some jobs that are so dirty that even MI5 can't risk getting involved. Which is when the authorities turn to a man who isn't afraid to go where others fear to tread - Lex Harper. Harper is sent into the Golden Triangle in a bid to block the flood of heroin that is crippling the West. But when the plan backfires, Harper discovers that heroin poses a threat much closer to home. And his retaliation takes him on a mission of revenge around the world.

In the winter of 1996, on the orders of the British government, the SAS stole the contents of a safe belonging to the Provisional IRA. Rick Fuller headed that team. Days later Fuller's wife was brutally murdered. Convinced he was betrayed from within, Fuller begins a relentless search for her murderers. Ten years on, Fuller is a Manchester gangland enforcer, a lone and bitter figure.

Court Gentry is known as The Gray Man - a legend in the covert realm, moving silently from job to job, accomplishing the impossible, and then fading away. And he always hits his target. But there are forces more lethal than Gentry in the world. And in their eyes, Gentry has just outlived his usefulness. Now, he is going to prove that for him, there's no gray area between killing for a living-and killing to stay alive.

Tom Novak is a troubled soul with a dark and bloody past. A former refugee, Royal Marine and member of the elite Special Reconnaissance Regiment, he now finds himself struggling with the deadening routine of day-to-day policing. When he is deployed undercover to infiltrate a gang of people traffickers, things go badly wrong. Faced with an impossible choice, his cover is blown, and he finds himself on the run from the Serbian mafia and even his fellow police colleagues. 

DS Ewan Striker is the best detective on the force. Unconventional and uncompromising, he is respected and feared in equal amounts. Tag Westland is a rookie. A rich boy who has realised that being a cop is not as glamorous as he first thought. In fact, he has his resignation in his pocket. These two unlikely crime fighters are thrown together, as it becomes apparent that each of their investigations are inextricably linked to something even more evil: a major terrorist attack.

Against all odds, Aydin Torkal - aka Sleeper 13 - broke free from the terrorist group that took him as a child and raised him into a life of violence and hate. In the two years since, he's been tracking and killing all those responsible. But he's not done yet. Now living a secret life in London, he receives a surprise visit from Rachel Cox of MI6. She needs his help to infiltrate a sinister new terrorist cell who've taken root in the USA. Aydin is initially reluctant.

When you want to take power, call the SAS. A right-wing billionaire is standing for Parliament. He enlists the help of ex-SAS soldier, Gabriel Wolfe. Gabriel left the Army after a covert mission went disastrously wrong and has sworn never to cause another man's death. It quickly becomes clear that Sir Toby Maitland's ambitions extend far beyond a seat as an MP. When an ex-contact in Swedish Special Forces, now working for MI5, contacts Gabriel, he realises he has little choice but to try to stop his employer.

Frankie Verdi, Eddie Williams and Tony Thompson are The Three Dogs. A ruthless criminal gang. A law unto themselves. Detective Jim Hacker has watched the Dogs grow from thuggish youths to psychotic criminals and seems to be the only cop in town with the determination to see justice done. Meanwhile Jamie Strange, a young Royal Marine, finds himself embroiled in the lives of the gang when his girlfriend, Laurie Holland, cuts off their engagement...to be with the most dangerous of the Dogs: Frankie Verdi. 

Rookie Cop Dave Stewart knew that William Bailey was guilty of murder. All he had to do to convict him was change one line in his statement. Detective Chief Superintendent John McCauley loves dirt. He collects it in secret files to use against his enemies, and since Stewart slept with the beautiful Detective Sergeant Anne Wallace, he is the enemy. Stewart hatches a plan to destroy the evidence against him, but inside McCauley's files is evidence of a vile paedophile ring operating under the Chief's nose. Now three people are dead, and Dave Stewart is the prime suspect.

He dedicated most of his life to the Joint Intelligence Agency. Now, James Ryker wants to start afresh. However, he soon hears about the murder of a woman whose fingerprints match those of a former adversary who's been missing, presumed dead...an assassin known as the Red Cobra. But Ryker confirms a case of mistaken identity. Who is the dead woman? And where is the real Red Cobra?

When elite Delta Force soldier Luke Stone joins a secretive government agency, he is dispatched on the mission of a lifetime: a whirlwind race across Europe and the Mid-East to save the President’s daughter before she is beheaded by terrorists. 

Who was Dan "Spider" Shepherd before he signed up as an undercover cop and began working for MI5? The Sandpit rewinds with an action-packed rollercoaster to his days in the SAS.... Dan Shepherd and his SAS team are sent into the badlands of Afghanistan to train the rebels who are battling Taliban fanatics. But what starts as a training mission in The Sandpit rapidly turns into a life or death struggle with Shepherd and his team very much in the firing line.

When an ISIS bombmaker arrives at Heathrow Airport asking for asylum in exchange for revealing details of his paymasters, Shepherd is given the case. The bombmaker specialises in drone strikes and homegrown jihadists that he has trained are already back in the UK, planning their attacks. But before he'll agree to talk, the terrorist insists that his wife and son are rescued from a refugee camp in Turkey. Shepherd is tasked with bringing the family back to London, but he soon discovers that dark forces are out to stop him. And if he fails, hundreds will die.

Do you need my help? It was always the first question he asked. They called him when they had nowhere else to turn. Raised and trained as part of a top-secret programme, he was sent to the worst places in the world to do things his government denied any knowledge of. Then he broke with the programme and disappeared. But now someone's on his tail. Someone who knows he was once known simply as Orphan X.

When an MI6 agent is found to be keeping records of his missions to protect himself from betrayal he unwittingly makes himself a priority target. But how do you silence the most dangerous man imaginable? Send him into hell on earth. While Alex King is sent into Northern Iraq to tidy the loose ends of a botched mission, the archipelago of Indonesia is under communist threat from within its own military. A consortium of worried businessmen call for desperate measures and seek the services of an assassin.