| PPeter TompkinsThe Investigator | The Investigator |
| WWill KnickerbockerLt. Cmdr. Whorley | Lt. Cmdr. Whorley |
| FFred BuchDr. Asper | Dr. Asper |
| JJack NagleConsul Gottschalk | Consul Gottschalk |
 John LawrenceEnsign #1 | Ensign #1 |
| PPhil GobleEnsign Cain | Ensign Cain |
| JJim MarshExecutive Officer Forbes | Executive Officer Forbes |
| DDave KraulEnsign Hoffman | Ensign Hoffman |
 Lou ColomboMurderer | Murderer |
| JJim HessCapt. Robert Lindquist | Capt. Robert Lindquist |
| RRobert GarrisonCo-Pilot Hill | Co-Pilot Hill |
| JJanet RaneyStewardess Mary Burke | Stewardess Mary Burke |
 Michael W. SchwartzController | Controller |
| VVíctor VillaAviation Chief | Aviation Chief |
| JJerry MannDan Burak | Dan Burak |
| RRay CrawfordFather Horgan | Father Horgan |
| GGregory BaylessSgt. Robert Gallivan | Sgt. Robert Gallivan |
| JJohn DodsonPfc. YoYo Gruebel | Pfc. YoYo Gruebel |
| TTimothy MillerPfc. Joseph Delman | Pfc. Joseph Delman |
| EEric HenshawLt. Taylor | Lt. Taylor |
| HHarry Frank PorterDuty Officer | Duty Officer |
| SSteven UzzelLt. Robert Cox | Lt. Robert Cox |
| JJames R. GeetingCapt. Edward Powers | Capt. Edward Powers |
 Charles LuciaDinner Key #1 (as Chip Lucia) | Dinner Key #1 (as Chip Lucia) |
 Randy StoneDinner Key #2 | Dinner Key #2 |
| JJoe BernardoniController #1 | Controller #1 |
| RRoger GortonController #2 | Controller #2 |
