There were four films made with Dennis Waterman as the reluctant agent who after the loss of his wife and child in a terror attack is unwilling to rejoin the game but is nonetheless persuaded to do so by chief Susan Jameson, a very cool dark lady in perfect control of many dark and weird and random operations, for which she succeeds in engaging the very hot-tempered and volatile Waterman who is constantly threatening to wander off and break all engagements, but who nonetheless seems to succeed in fulfilling them. This is not the best one of the four episodes, it is rather muddled, as Moscow interests and intrigues are mixed up with terror projects of the IRA, and there is a German agent mixed up also, a certain very unsympathetic Schroeder, whose motivation never is explained: he just acts "on his own behalf", but one suspects that he was mixed up in that German terror attack which killed Waterman's wife and child, lost some dear beloved like him and therefore had reasons for infinite revenge. Leo McCarey plays a former Soviet agent who too quickly is sorted out, like another IT expert agent as well, whom we actually see being murdered. There are too many thugs, violent murders, loose ends and unexplained mysteries and motivations here, although it is a great action thriller, though second to "Dark Secret", which probably is the best one of the four.