Spy Killer stars Robert Horton as a secret agent turned private eye. Framed for murder, Horton is released, but only after promising that he'll track down a book containing a list of government agents who are operating covertly in Red China. The reluctant spy discovers that he can't completely trust anyone in this endeavor--not even his former chief
| Actor | Role |
|---|---|
 Robert HortonJohn Smith | John Smith |
 Sebastian CabotMax | Max |
 Jill St. JohnMary Harper | Mary Harper |
 Eleanor SummerfieldMrs. Roberts | Mrs. Roberts |
 Lee MontagueIgor | Igor |
| DDouglas SheldonAlworthy | Alworthy |
 Robert RussellPolice Sergeant | Police Sergeant |
 Barbara ShelleyDanielle | Danielle |
 Harvey HallNot listed | Not listed |
 Donald MorleyDunning | Dunning |
 Kenneth J. WarrenDiaman | Diaman |
 Philip MadocGar | Gar |
 Michael SegalNot listed | Not listed |
 Timothy BatesonNot listed | Not listed |
 Douglas BlackwellNot listed | Not listed |
 Sonny CaldinezNot listed | Not listed |
| JJohn SlavidNot listed | Not listed |
| AAnthony StambouliehNot listed | Not listed |