Lord Yearley, an arrogant aristocrat whose younger wife is two-timing him, is the subject of death threats. When a shot is fired at him and he is nearly killed, his daughter asks the Saint to intervene and find the culprit.
A man is murdered in a phone booth on Waterloo station while Simon Templar is making a call. But before his death he has managed to slip a mysterious package of "Miracle Tea" into the bag of a young nurse who works at the naval base at Portland. Now the Saint wants to know why.
In the Australian outback the Saint tricks two greedy and quarrelsome brothers into repaying their old father money that they have long owed him when he tempts them with the offer of shares in a silver mine.
The Saint is in Munich for the Oktoberfest when a friend of his, American Army Sergeant Henry Johns, is killed whilst trying to stop an armed robbery at his base. Unbeknown to him, Mathilde Baum, whom he believed to be his girl-friend, was actually part of the gang, using her friendship with him to gain insider information. Furthermore, she is now getting cosy with another American soldier, Sergeant Pargo, who was a friend of Johns. He teams up with the Saint to go after the hi-jackers and avenge their dead buddy.
Simon helps an Italian family who owns a London restaurant when a conman leaves one of their members with child. The Saint takes a particular interest when he discovers the conman left the country with a million pounds.