A successful professor has his life disrupted by a secret from his past — in his college days he became a member of a powerful secret society, and now the society has a job for him.
| Actor | Role |
|---|---|
 Glenn FordProf. Andrew 'Andy' Patterson | Prof. Andrew 'Andy' Patterson |
 Rosemary ForsythVivian Masters Patterson | Vivian Masters Patterson |
 Dean JaggerChad Harmon | Chad Harmon |
 Maurice EvansHarry Masters | Harry Masters |
 Will GeerMike Patterson | Mike Patterson |
 Eduard FranzDr. Konstantin Horvathy | Dr. Konstantin Horvathy |
 William ConradBart Harris | Bart Harris |
 Robert PinePhillip Dunning | Phillip Dunning |
 William SmithersDr. Jerry Fielder | Dr. Jerry Fielder |
| LLogan FieldThaddeus Burns | Thaddeus Burns |
 Dabney ColemanAgent Shepard | Agent Shepard |
| SScott GrahamWeber | Weber |
 James McEachinPolice Detective | Police Detective |
 Robert ClarkeDr. Louis Bauier (uncredited) | Dr. Louis Bauier (uncredited) |
 Lisabeth HushBetty Fielder (uncredited) | Betty Fielder (uncredited) |
 Mark RobertsDA Avery Hazelton (uncredited) | DA Avery Hazelton (uncredited) |