A revolutionary new textile formula gets stolen and the developer's daughter asks Simon for help.
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.
Shortly after meeting the Saint in a Paris nightclub 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.
It's the most unusual assignment he's ever undertaken - Simon is hired to disguise himself as a gangster and kill... the Saint. Determined to find out who is behind the plan , Simon arranges his own death.
Templar and the niece (Annette Andre) of a research scientist search through a labyrinth of tunnels underneath a mountain in Wales.
