The sequel to the films Escape to Witch Mountain and Return from Witch Mountain, this film has Tia and Tony following their Uncle Bene to Earth in his attempts to find his long-lost-grandson.
| Name | Type | Role | |
|---|---|---|---|
| Hal Kanter | Writer | ||
| B.W. Sandefur | Writer | ||
| Eddie Albert | Guest Star | Jason O'Day | |
| Tracey Gold | Guest Star | Tia | |
| Andy Freeman | Guest Star | Tony | |
| Efrem Zimbalist Jr. | Guest Star | Aristotle Bolt | |
| Robert Day | Director |