Ed Brown is a retired gangster with a sense of humor which includes getting his four greatest enemies at one another's throats. Simon helped to put him in jail the last time and intends to repeat the favor, providing Brown allows him to live to do it.

When the Saint signs on as a mercenary, and finds that things are none too healthy on the health farm where he's being trained, he decides to find out the real function of the establishment. Is it a school for murder?