Treble Cross Captain Scarlet and the Mysterons : Season 1 Episode 21
TV-PG Associated Television 25m
Aired: February 23rd, 1968 @ 10:30 AM EST on Associated Television
Captain Black engineers the death of chief test pilot Major Gravener, who is retrometabolised as a Mysteron agent as part of the Mysterons' plan to destroy the World Capital, Futura City.
