Space: 1999

Season 1, Episode 19

Episode Title: Ring Around the Moon

Air Date: 1976-01-15

Overview:

A technician falls under an alien influence, accessing classified information before mysteriously dying. Soon after, the Moon is stopped in space by the powerful rays of an alien spacecraft. The aliens' only interest in Alpha is the data held in its computers, information they now plan to obtain through the possessed eyes of their next agent: Helena Russell.