The Davises are expecting a baby, which turns out to be a monster with a nasty habit of killing people whenever scared. And it's easily scared.
| Actor | Role |
|---|---|
 John P. RyanFrank Davis | Frank Davis |
 Sharon FarrellLenore Davis | Lenore Davis |
 Andrew DugganThe Professor | The Professor |
 Guy StockwellBob Clayton | Bob Clayton |
 James DixonLt. Perkins | Lt. Perkins |
 Michael AnsaraThe Captain | The Captain |
 Robert EmhardtThe Executive | The Executive |
 William Wellman Jr.Charley | Charley |
| SShamus LockeThe Doctor | The Doctor |
| NNancy BurnettNurse | Nurse |
 Daniel HolzmanChris | Chris |
| DDiana HaleSecretary | Secretary |
| PPatrick McAllisterExpectant Father | Expectant Father |
| WW. Allen YorkExpectant Father | Expectant Father |
 Gwil RichardsExpectant Father | Expectant Father |
| JJerry TaftExpectant Father | Expectant Father |
| GGerald YorkExpectant Father | Expectant Father |