Crispin Bridge is a troubleshooter for hire.
He is the kind of man called when the problem is beyond normal handling and extreme measures are needed. If a truck filled with not-so-legal items needs to cross a border, Bridge is the man to call. If a blackmailer simply will not listen to reason and go away, Bridge will discuss it with him. And if someone is treatening your life and doesn't seem willing to stop, Bridge will make him stop, one way or another.
An SAS man with several years of experience in Northern Ireland, he was allowed to leave when a run-in with his commanding officer over a set of orders less than intelligently considered ended with the leader dead and Bridge just barely avoiding a court martial. The fact that Bridge was right and the leader wrong was the only reason he wasn't in prison for life.
Needing a new career, Bridge took a good paying job driving a truck filled with military goods to Turkey. This lasted for two years until an attack by bandits in the Turkish mountains turned violent. Bridge was the survivor. This brought him to the attention of the immensely powerful conglomerate Northern Aerospace Corporation and their Dirty Tricks division.
As of the beginning of the series, he had performed five very interesting jobs for the company, including a trip into Moscow for secrets the Soviets did not want removed. He had been paid well for these jobs, putting his money away and living simply. Money was not really the issue any more. It was the work. And he was very good at it.
In addition to the jobs for NAC, however, Bridge is not unavailable for other missions though with his finances firmly established, it has to be a very compelling reason to get him to risk his life.