The wife of a research geneticist agrees to the experimental procedure of a 'test-tube baby' by having her fetus brought to full term in a glass jar in a laboratory.
| Actor | Role |
|---|---|
 Stephanie ZimbalistKay Spence | Kay Spence |
 William AthertonJim Spence | Jim Spence |
 Bruce DavisonCliff Bender | Cliff Bender |
 Ed FlandersAnders Stenslund | Anders Stenslund |
 Salome JensLaura Pressburg | Laura Pressburg |
 James ShigetaDonald Shibura | Donald Shibura |
 Susan OliverMarilyn Hurst | Marilyn Hurst |
 Arthur HillDr. Glenn Gorham | Dr. Glenn Gorham |
| TTeddi SiddallJanice Bender | Janice Bender |
| JJ. Víctor LópezRoy | Roy |
| JJerry McNeelyDr. Sargent | Dr. Sargent |
| DDave TurnerLieutenant Wolders | Lieutenant Wolders |
| SSteven HelmMan at Accident | Man at Accident |
| VVirginia BinghamCheryl | Cheryl |
| FFreddye ChapmanNurse | Nurse |
| LLance RosenChuck | Chuck |
| JJody MylerArlene | Arlene |
 Shelly O'NeillSecretary | Secretary |