The sweet and perky Barbara, the sunny Janis, and the responsible Sandra are a trio of young and attractive nurses who work in the psych ward at a hospital. The threesome really have their hands full dealing with nutty patients, creepy stalkers, and black revolutionaries
| Actor | Role |
|---|---|
 Patty ByrneBarbara | Barbara |
 Alana StewartJanis | Janis |
 Mittie LawrenceSandra | Sandra |
 Clint KimbroughDr. Bramlett | Dr. Bramlett |
 Felton PerryJude | Jude |
 Richard YoungKyle Toby | Kyle Toby |
 Dennis DuganKit | Kit |
| CChristopher LawZach | Zach |
 Stack PierceSampson | Sampson |
 Bobby HallWarden Kelley | Warden Kelley |
 Martin AsheBathrobe Benny | Bathrobe Benny |
| RRobert StaatsE. Eddie Edwards | E. Eddie Edwards |
| KKate MonahanNurse Mayall | Nurse Mayall |
 Dick MillerMr. Jensen | Mr. Jensen |
 James MillhollinDr. Rolland | Dr. Rolland |
 Dixie PeabodyRobin | Robin |
 Tristram CoffinMiles Bailey | Miles Bailey |
| CCarlos VarzeasCarlos | Carlos |
| BBarbara KeeneChloe | Chloe |
| LLynne GuthrieCynthia | Cynthia |
| BBob BroganGeorge | George |
 Johnny Ray McGheeJackson | Jackson |
| JJim SullivanCurtis | Curtis |
| HHarry WoolmanPoliceman | Policeman |
| FFrancoise DarcMelissa (uncredited) | Melissa (uncredited) |
| RRon GansRadio newscaster (voice) (uncredited) | Radio newscaster (voice) (uncredited) |
| JJim HeinlenGuard (uncredited) | Guard (uncredited) |
| LLyllah TorenaMelissa (uncredited) | Melissa (uncredited) |