A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.
| Actor | Role |
|---|---|
| DDavid LoveDerek | Derek |
 Dawn BenderBetty Morgan | Betty Morgan |
 Harvey B. DunnGramps Morgan | Gramps Morgan |
| BBryan GrantThor | Thor |
| TTom GraeffJoe Rogers | Joe Rogers |
| KKing MoodySpacecraft Captain | Spacecraft Captain |
| HHelen SageNurse Morse | Nurse Morse |
| FFrederick WelchDr. C.R. Brandt, MD | Dr. C.R. Brandt, MD |
| CCarl DickensenGas Station Attendant | Gas Station Attendant |
| SSonia TorgesonAlice Woodward | Alice Woodward |
| BBilly BridgesDriver picking up Thor | Driver picking up Thor |
| JJames ConklinProfessor Simpson | Professor Simpson |
| GGene SterlingThe Alien Leader | The Alien Leader |
| RRalph LoweMoreal, Spaceship Crew | Moreal, Spaceship Crew |
| BBill DeLandSaul, Spaceship Crew | Saul, Spaceship Crew |
 Ross EvansSchool Janitor | School Janitor |