UFO - Reflections in the Water

Seizoen: 1 - Aflevering: 24 / 26 - Eerst uitgezonden: 24 juli 1971 - Episode ID: 355921

A mysterious dome is found under the sea, inside of which SHADO finds duplicates of their HQ personnel who are using non-alien technology to spoof SHADO's instructions to Moonbase and Skydiver.