Joe Mannix is hired by a secretive businessman named Alton K. Moore, who wants Mannix to look for his son Cal, a college basketball player who has been missing for several days. Although the case takes Mannix back to his alma mater, he has his doubts about Moore, who insists on meeting in remote places instead of at his office. His concerns about the elder Moore -- and the serious trouble that Cal may be in -- begin to seem justified when several thugs begin shadowing Mannix during his search.
—aldanoli