Ann Collins is een aanstaande moeder, wier ongeboren kind meer teweeg brengt dan de standaard schopjes en zwangerschapspijntjes. In werkelijkheid is de kleine in de baarmoeder een buitenaards wezen die de controle over het lichaam en geest van de moeder wil overnemen.
Nee, helaas is The Stranger Within nog niet beschikbaar op Netflix in Nederland.
| Directing | Lee Philips | Director |
| Camera | Michael D. Margulies | Director of Photography |
| Costume & Make-Up | Patricia Norris | Costume Design |
| Production | Neil T. Maffeo | Producer |
| Production | Lee Rich | Executive Producer |
| Art | James Cane | Set Decoration |
| Sound | Charles Fox | Original Music Composer |
| Production | Philip Capice | Executive Producer |
| Production | Jack Roberts | Casting |
| Art | Hilyard M. Brown | Art Direction |
| Writing | Richard Matheson | Short Story |
| Writing | Richard Matheson | Teleplay |
| Editing | Samuel E. Beetley | Editor |
| Directing | Kurt Neumann | Assistant Director |
| Production | Kurt Neumann | Unit Production Manager |
| Directing | Robert Bennett Steinhauer | Second Assistant Director |
| Directing | Adell Bravos | Script Supervisor |
| Sound | Ken Runyon | Music Editor |
| Camera | Jerry Deats | Key Grip |
| Costume & Make-Up | Patricia Norris | Costumer |
| Crew | James R. White | Transportation Coordinator |
| Costume & Make-Up | Patricia Miller | Hairstylist |
| Editing | Gene Fowler Jr. | Editorial Manager |
| Production | Julie Waxman | Production Assistant |
| Art | Al Legget | Property Master |
| Art | Al Rohm | Construction Coordinator |
| Sound | Victor Guarnier | Sound Effects Editor |
| Sound | Dwight Mobley | Sound Director |
| Sound | Bill Wistrom | Sound Effects Editor |
| Lighting | Gary Tandrow | Gaffer |
| Directing | Kurt Neumann | First Assistant Director |
| Camera | Frank Beascoechea | Camera Operator |
| Costume & Make-Up | Karl Herlinger | Makeup Artist |
