The Saint is invited to the wedding of his very rich friend Waldo Oddington to Nadine, a girl young enough to be his daughter. Other guests include Waldo's three ex-wives and his nephew George McGeorge, who is highly critical of his uncle's decision.
In a spoof of the 1967 British TV series The Prisoner, Tara finds herself trapped in a posh prison without bars or guards, which, on the surface, appears to be merely an elegant hotel...
Steed sends Cathy to visit Plato the world's most advanced computer and they discover that the machine can remember a murderer.