The first pilot to leave Earth's atmosphere lands, then vanishes; but something with a craving for blood prowls the countryside...
| Actor | Role |
|---|---|
 Marshall ThompsonCmdr. Charles Ernest Prescott | Cmdr. Charles Ernest Prescott |
 Marla LandiTia Francesca | Tia Francesca |
 Bill EdwardsLt. Dan Milton Prescott | Lt. Dan Milton Prescott |
 Robert AyresCapt. Ben Richards | Capt. Ben Richards |
 Carl JaffeDr. Paul von Essen | Dr. Paul von Essen |
 Bill NagyPolice Chief Wilson | Police Chief Wilson |
 Roger DelgadoMexican Consul - Ramon de Guerrera | Mexican Consul - Ramon de Guerrera |
 John McLarenState Dept. Official, Harold Atkins | State Dept. Official, Harold Atkins |
| SSpencer TeakleRatings Control Room | Ratings Control Room |
| CChuck KeyserRatings Control Room | Ratings Control Room |
 John FabianRatings Control Room | Ratings Control Room |
| RRichard ShawWitney | Witney |