by Tony Barwick
"The Spectrum organisation will be torn apart from within. The traitor among you will create havoc and destroy morale."
Spectrum Hovercraft 6 is inexplicably destroyed at Koala Base, a cadet school in Australia. Captain Scarlet and Captain Blue are assigned to investigate the possibility of sabotage from within Spectrum itself, but it seems the latest Mysteron threat has caused a high level of mistrust and paranoia - and soon Captain Scarlet finds himself charged with being the traitor...
Francis Matthews (Captain Scarlet), Ed Bishop (Captain Blue), Donald Gray (Colonel White), Cy Grant (Lieutenant Green), Donald Gray (Captain Black / Voice of the Mysterons), Liz Morgan (Destiny Angel), Sylvia Anderson (Melody Angel), Lian Shin (Harmony Angel), David Healy (Major Stone), Gary Files (Phil Machin), Jeremy Wilkin (Joe Johnson), Charles Tingwell (Pilot, A42)
Directed by Alan Perry
Produced by Reg Hill
Executive Producer Gerry Anderson
UK (ATV Midlands):
April 23rd, 1968 @ 5.00 pm - 5.25 pm
(Postponed from January 12th, 1968)
*Featuring Captain Scarlet, Captain Blue, Colonel White, Lieutenant Green, Destiny, Melody Angel, Harmony Angel and Captain Black