General Charles Kirk is the head of the British Foreign Office Intelligence, Europe. In this capacity, it is his role to decide which jobs his agents will handle and which of his numerous qualified people he will send. He has been in this position for a fair number of years prior to the start of the series. Amusingly, he has a much put upon secretary of many years by the name of Miss Bond.
A short, rotund man of advancing years, Kirk bears more than a few scars from action during WWII, and possibly before. This includes missing three fingers below the first knuckle on his left hand.
Tough and ruthless when he has to be, he has the ability to show compassion and concern. When it comes to his enemies, however, he has no qualms about ordering death, or causing it himself. No longer a field agent, he still at times goes close to the action.
Kirk is still every bit committed to his job as he ever was but he does, at times, realize that it has taken a toll. At one point he laments to a colleague, "we've sat in this dusty, unknown building that nobody normal ever comes to for a great many years." More telling is his comment "when we do retire we'll have ... few old friends to talk to because we've sent most of our friends to their deaths."
Several of the missions in which Kirk and his people become involved have a decided occult feel to them as the adversaries are either trying to use strange forces or uncommon events take place to cause sane people to blanche. Science also plays a major role making the dangers more apparently horrific. Interestingly, Kirk is both bothered and fascinated by many of the events he uncovers and the fact that his mind can unravel the clues to come to the conclusions they do can worry some of his acquaintances.