 Dennis HaysbertClay Arlington | Clay Arlington |
 Mel HarrisDr. Renee Descartes | Dr. Renee Descartes |
 Sab ShimonoDr. Max Shinoda | Dr. Max Shinoda |
 Dina MerrillAlice Jameson | Alice Jameson |
 Michael HarrisVincent Towers | Vincent Towers |
 David GrafLt. Weismann | Lt. Weismann |
 Fran RyanMrs. Lucerne | Mrs. Lucerne |
 John IngleSidney Callahan | Sidney Callahan |
 Sanford GibbonsDr. Fuller (as Sandy Gibbons) | Dr. Fuller (as Sandy Gibbons) |
| MMark DeMicheleDetective Joe | Detective Joe |
 Sandra Ellis LaffertyNurse Stevens (as Sandra Lafferty) | Nurse Stevens (as Sandra Lafferty) |
| CCapri DarlingSoprano | Soprano |
 Carol KiernanTicket Agent | Ticket Agent |
| LLaura GroppeSportswoman | Sportswoman |
| MMel ColemanSportsman | Sportsman |
| LLon CarliMan with Camera | Man with Camera |
| AAnn Van WeyMrs. Lucerne's Nurse | Mrs. Lucerne's Nurse |
| SSam SmileyDoctor #1 | Doctor #1 |
| SSeth SiegelDoctor #2 | Doctor #2 |
 Vincent BarbiArthur Towers | Arthur Towers |
| MMark SiegelEmergency Room Doctor (as Mark Siegel D.O.) | Emergency Room Doctor (as Mark Siegel D.O.) |
| JJack RubensCaptain Sparks (voice) | Captain Sparks (voice) |
