Oscar Newley has perfected a new fuel injection system for his racing car and approaches Simon for financial backing.

Shortly after meeting the Saint in a Paris night club and informing him that he is being followed, Brian Quell is kidnapped by a gang led by a man called Jones in an attempt to lure Brian's brother, a professor, to work for foreign agents. Brian is killed and Jones plans to abduct the professor at the funeral. The Saint is under suspicion for the murder and, in escaping from the police, hides out with a young girl called Madeline, who has won a holiday to Paris as a prize. She is in turn abducted by Brian's killers and the Saint must rescue her and head off the ...

Steve Nelson is an up-and-coming young boxer with a promising career but his girl-friend Connie approaches the Saint because she is fearful of his next opponent, a mysterious Australian known as the Masked Angel, who has actually killed a man in a fight, although there was no evidence of foul play. The Saint is suspicious of the Angel's manager, Doc Spengler, the more so after a man who has offered to spy on Spengler is found dead and the Saint is shot at. Then Steve is deliberately run over and unable to box. The Saint decides to take his place in the ring and unmask...

Neither Inspector Teal nor the Saint are impressed by Peter Corrio, a smug private detective who boasts to them that his security system for the fabulous Oppenheim emerald is fool-proof. They are suspicious that he has managed to solve so many jewel thefts that have evaded the police. Then the Saint meets Janice Dixon, who tells him that her brother was killed trying to escape from the police having had jewels planted on him by Corrio. She believes that Corrio himself has engineered the recent thefts in order to return the jewels for the rewards involved. Then Janice ...

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. On the eve of the wedding the Saint sees Nadine in conversation with a young man called Pierre who would seem to be her lover but she tells the Saint that she has finished with him. That night Waldo is shot dead and his life is found to have been massively insured. But who stood to gain by his death and how? The Saint ...

Nicknamed 'the Man Who Could Not Die' international adventurer Miles Hallin goes into partnership with Nigel Perry, whose father has recently died. Following the death of a man suspected of blackmailing Hallin, the Saint believes that Hallin killed Nigel's father and that Nigel himself could be in danger. Hallin and Nigel set out for a pot-holing holiday in Wales with the Saint in pursuit, ultimately confronting Hallin and putting his immortality to the test.

The crooked Abdul Graner has stolen a priceless diamond from the Louvre and is now awaiting an expert to come to his villa in the Canary Islands to cut the diamond for him. Unbeknown to Graner this is the Saint, working for the police. Christine Graner, Abdul's wife, tells the Saint that her husband is a brute and she wants to leave him, along with the Saint and the diamond, but the Saint feels obliged to continue with his deception. Although Graner is unaware of the Saint's true identity he has his suspicions and forces him at gunpoint to cut the stone whilst holding...

On the French Riviera the Saints rescues Dona Luisa Arroya and her young companion Consuela from two robbers. Dona Luisa and Gilberto, her brother-in-law, tell the Saint that they are part of a once influential family, exiled from the island of Santa Cruz, who have come to sell Dona Luisa's jewelry to raise money for a return to power - hence the robbery. So much is made of the jewels and so many people seem anxious to steal them that the Saint is not surprised to discover that they are fakes. Now he has to discover why the Arroyas really want to involve him in their ...

In a pub in Cornwall, the Saint meets three men, each of whom owns a third of a map that allegedly shows the whereabouts of sunken treasure in the West Indies. He joins their party to discover whether the treasure is a myth or a reality. On arriving at the supposed location of the treasure he quickly comes to see that there is - literally - a deadly rivalry among the group members.