Alien beings, who settle in a small midwestern town, are disturbed by a young professor determined to rescue his daughter from their clutches.
| Actor | Role |
|---|---|
 Paul Le MatCharles Bigelow | Charles Bigelow |
 Nancy AllenBetty Walker | Betty Walker |
 Diana ScarwidMargaret Bigelow | Margaret Bigelow |
 Michael LernerWillie Collins | Willie Collins |
 Louise FletcherMrs. Benjamin | Mrs. Benjamin |
 Wallace ShawnEarl | Earl |
 Fiona LewisWaitress / Avon Lady | Waitress / Avon Lady |
 Kenneth TobeyArthur Newman | Arthur Newman |
 June LockhartMrs. Bigelow | Mrs. Bigelow |
 Charles LaneProf. Hollister | Prof. Hollister |
 Joel CohenTim | Tim |
 Dan ShorTeen Boy in Prologue | Teen Boy in Prologue |
 Dey YoungTeen Girl in Prologue | Teen Girl in Prologue |
 Jack KehlerGas Station Attendant | Gas Station Attendant |
 Thomas KopacheState Trooper | State Trooper |
 Bobby PickettEditor | Editor |
 Bill Condon(uncredited) | (uncredited) |
| LLulu SylbertElizabeth Bigelow | Elizabeth Bigelow |
 Mark GoddardDetective | Detective |
| CConnie KellersConnie | Connie |
| JJonathan UlmerRoom Service Waiter | Room Service Waiter |
| PPatti MedwidRoom Service Waitress | Room Service Waitress |
 Edwina FollowsNurse | Nurse |