I like this plot, and this one is pretty well acted and carried through. It's mainly worth watching, though for the bizarre wigs worn by the Major (couldn't they have found a toupee to match his hair?) and Mrs Jason, who sports a kind of Eiffel Tower of red hair rising from her cranium.
The best scene is at the beginning, when the conspirators meet as strangers in a City pub, and devise their scheme.
The best scene is at the beginning, when the conspirators meet as strangers in a City pub, and devise their scheme.