A young woman goes to teach at the Ravenscroft Institute, a spooky old girls' school overrun by ants and staffed by some unusual types. Spurred on by a series of horrific hallucinations, she begins to investigate the mysterious disappearances of several students.
| Actor | Role |
|---|---|
 Robert VaughnDr. Gary Julian | Dr. Gary Julian |
 Donald PleasenceDr. Schaeffer | Dr. Schaeffer |
 Karen LorreJanet Pendleton | Janet Pendleton |
 John CarradineJacob Julian | Jacob Julian |
 Ginger Lynn AllenDebbie | Debbie |
 Nia LongFingers | Fingers |
 William ButlerTim | Tim |
| JJanine DenisonShiro | Shiro |
 Arnold VoslooKen Wade | Ken Wade |
 Ashley HaydenBoze | Boze |
| SStefa PopicAmy | Amy |
| HHayley DorskeySue-Sue | Sue-Sue |
| RRoslynn FarrellTina | Tina |
| DDee Dee EybersYvonne | Yvonne |
| IIsabel KastrikisRita | Rita |
| SSharlene BennRoxy | Roxy |
| BBlanche FrolichMiss Rye | Miss Rye |
| LLynne WhiteDoris Raeburn | Doris Raeburn |
 Christine Le BrocqApril | April |
| JJohn BruceDuke | Duke |
 Marek LewandowskiGardener | Gardener |
| JJanet de HahnCook | Cook |
| MMarloe Scott WilsonFemale Guard | Female Guard |
| ZZia GarfieldMrs. Ketter | Mrs. Ketter |
| WWarren BatchelorParty Boy | Party Boy |
| SStefan RaynerParty Boy | Party Boy |
| RRobert StrongParty Boy | Party Boy |
| AAshley WaldorfCop | Cop |