It's 1996. A terminally ill father desperately seeks answers to what happened to his son, missing for 20 years. He has the names of two Argentine men - one in Mexico City, the other imprisoned on the Colombian island of Providencia - but no one to ask the questions. A missing girl's family have given her up for dead when they stumble upon a Miami newspaper story mentioning two of her friends. One has just died; the other, half deranged, tells a garbled story of sexual slavery on a Caribbean island which sounds suspiciously like Providencia.

Ultimate soldier. Ultimate mission. But will the SAS be able to rid Yemen of its unstoppable guerrillas? Aden, 1964, and the British are waging two different kinds of war. Inhabitants of Northern Yemen's forbidding mountainous region of Radfan are conducting guerrilla attacks against the British. Armed by the Egyptians and trained by the communist Yemenis, they seem an invincible fighting force.

Ultimate soldier. Ultimate mission. But can the SAS face the might of Rommel's army and win? In the North African desert in 1941, the war is being won by the brilliant German commander General Rommel, and the British are in retreat on all fronts. A young British army lieutenant, David Stirling, believes that the only way to reverse this situation is to attack the enemy behind their own lines, using small groups of men who can insert by land, sea or air as required.

John Porter, hero of the original Strikeback novel and TV series, returns in an exciting adventure when old enemies attack the SAS. It's 1999. A bitterly cold morning in the Brecon Beacons, and the soldiers trying out for SAS Selection are preparing to face their toughest test yet. Overseeing the soldiers is John Porter: once a promising young Blade, now a broken man and a drunk, seeing out his days in the Regiment Training Wing. But before the Fan Dance can begin, six masked gunmen carry out a devastating attack.

When a British Special Forces soldier goes rogue, carrying out an attack at a US Army base in Syria leading to the death of two men, ex-MI5 controller Charlotte Button is hired to work out what his plan is and to take him down before he can carry it out. When the man returns to the UK, it looks like the threat will be a lot closer to home. Charlotte puts her best man on the case - hitman Lex Harper.