Soldier Y: Days of the Dead — David Monnery

Ultimate soldier. Ultimate mission. But can the SAS break in to a Colombian island prison and snatch an Argentine killer?

1996: a terminally ill father desperately seeks answers to what happened to his son, missing for twenty 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.

MI6 and the British government are certain that a huge drug-trafficking empire is being run from the prison, and know that some of the profits are being funnelled by its Argentine guest into financing a mercenary invasion of the Falklands. Ignored by the Colombian authorities and mysteriously obstructed by their American allies, the British have no choice but to send in their own elite force the SAS.