The setting is somewhat different to That Last Mountain in that most of the action takes place in Colombia, Ireland and Spain rather than Sweden but the same elements are present. The hero of the tale - based on a real life character, according to Strong - is an ex-military type who happens to knock off drug barons for a living (well, something like that; read it and see). The characters are fairly well drawn for an action novel, the plot is complex enough to keep you intrigued but not so complex that you can't follow it and, unusually, the good guys don't always win. Sometimes they even die mid-novel.
I found it a hard book to put down. If I had a complaint it would be that there seemed to be three endings to the book as all loose ends seemed to be tied up at the end of the Colombian scene and I wondered what on earth the last 100 pages were going to be, then the same seemed true after Spain but actually we needed to get to the end of the Irish bit before the end arrived and all the plot lines were, in fact, brought together and resolved - including several that I had completely missed or forgotten about.
I'll be including more Terence Strong novels in my reading list over the next year or so. I see he has a back catalogue of about 20 books with a new one due out mid year.