Doppelgänger
- Annu: 1969
- Paese: United Kingdom
- Genre: Science Fiction
- Studio: Century 21 Television
- Parolla chjave: space travel, space mission, space, astronaut, trapped in space
- Direttore: Robert Parrish
- Cast: Roy Thinnes, Ian Hendry, Patrick Wymark, Lynn Loring, Loni von Friedl, Franco De Rosa