I want to like John Creed, and his alter ego Eoin McNamee has written some great stuff. The problem here is credibility.
Although the plot is jolly good, and the pace keeps the pages turning, the central conceit is incredible. That is: a former spy (Jack Valentine) has fallen out with his former paymasters for no obvious reason and gets caught up in a covert operation led by the self same former employers, who promptly try to despatch him. Whilst doing this, Valentine seems to support himself financially despite not having a day job.
Creed/McNamee has never been terribly good at continuity and some examples grate. An inquest, for example, is located in Belfast/Newcastle depending upon which page you are reading. Valentine's car in Northern Ireland is an Opel or a Ford, depending on the page (and how des he have a car given that he arrived in Northern Ireland on his own boat?) And how does the chap he took over to Northern Ireland get back to Scotland given that Valentine stays on? And how come everyone that Valentine meets is in on the job?
I'm afraid this is not a terribly good book - if it were a puppet, you'd say you could see the strings. But for all that, it is quite endearing to find a Northern Ireland set thriller that doesn't descend into the Troubles.