Tony and Tia are other-worldly twins endowed with telekinesis. When their Uncle Bene drops them off in Los Angeles for an earthbound vacation, a display of their supernatural skill catches the eye of the nefarious Dr. Gannon and his partner in crime, Letha, who see rich possibilities in harnessing the children's gifts. They kidnap Tony, and Tia gives chase only to find Gannon is using her brother's powers against her.
| Actor | Role |
|---|---|
 Bette DavisLetha Wedge | Letha Wedge |
 Christopher LeeVictor Gannon | Victor Gannon |
 Kim RichardsTia | Tia |
 Ike EisenmannTony | Tony |
 Jack SooMr. "Yo-Yo" Yokomoto | Mr. "Yo-Yo" Yokomoto |
 Anthony JamesSickle | Sickle |
 Richard BakalyanEddie | Eddie |
 Ward CostelloMr. Clearcole | Mr. Clearcole |
 Christian JuttnerDazzler | Dazzler |
 Brad SavageMuscles | Muscles |
| PPoindexter YothersCrusher | Crusher |
| JJeffrey JacquetRocky | Rocky |
| SStu GilliamDolan | Dolan |
 William BassettOperations Officer | Operations Officer |
| TTom ScottMonitor | Monitor |
 Helene WinstonDowager | Dowager |
| AAlbert AbleEngineer | Engineer |
 Denver PyleUncle Bene | Uncle Bene |
| BBrian PartGoon #1 | Goon #1 |
| PPierre DanielGoon #2 | Goon #2 |
| WWally BrooksTaxi Fare | Taxi Fare |
| MMel GoldSecurity Guard | Security Guard |
| BBob YothersCop | Cop |
| CCasse JaegerSchool Patrolman | School Patrolman |
| LLarry MarmorsteinGuard #1 | Guard #1 |
| BBob JamesGate Guard | Gate Guard |
| RRuth WarshawskyLady in Car | Lady in Car |
| AAdam AndersonMan in Museum | Man in Museum |
| RRosemary LordWoman in Museum | Woman in Museum |
 Lloyd NelsonMuseum Guard | Museum Guard |