First aired: Sep/29/1967
Writer: Gerry Anderson, Sylvia Anderson
Director: Desmond Saunders
Guest star: Paul Maxwell (World President), Charles Tingwell (Captain Brown, Lt. Dean, Helicopter Pilot, Spectrum HQ (London)), Jeremy Wilkin (Captain Black, Petrol Pump Attendant, Radio)

First aired: Oct/06/1967
Writer: Tony Barwick
Director: David Lane
Guest star: Janna Hill (Intercontinental Airlines Tannoy), Martin King (DT19 Co-Pilot, Airport Chief), Charles Tingwell (Captain Brown, Airport Operator, Agent 042), Jeremy Wilkin (Director General), Paul Maxwell (DT19 Pilot)

First aired: Oct/13/1967
Writer: Tony Barwick
Director: Brian Burgess
Guest star: Martin King (2nd Policeman), Jeremy Wilkin (3rd Policeman, Radio Announcer), Charles Tingwell (Macey, 4th Policeman), Paul Maxwell (1st Policeman)

First aired: Oct/20/1967
Writer: Tony Barwick
Director: Alan Perry
Guest star: Paul Maxwell (Guard), Charles Tingwell (Harris), Jeremy Wilkin (Guard Voice 1), Martin King (Security Guard), David Healy (Geiger Operator, Guard Voice 2), Gary Files (Richards, Garage Mechanic)

First aired: Oct/27/1967
Writer: Shane Rimmer
Director: Brian Burgess
Guest star: Charles Tingwell (Marshall), Paul Maxwell (General Ward), Gary Files (Eddie, Trapper, 3rd Sentry), Martin King (1st Sentry, 2nd Sentry), Jeremy Wilkin (Lt. Burroughs, Radio)

First aired: Nov/03/1967
Writer: Peter Curran, David Williams
Director: Robert Lynn
Guest star: Jeremy Wilkin (Pilot), Gary Files (Ensign Soames, DJ Bob Lynn), Paul Maxwell (Captain of the USS Panther II), Charles Tingwell (Lt. Belmont), Martin King (TVR-17 Control)

First aired: Nov/10/1967
Writer: Alan Pattillo
Director: Alan Perry
Guest star: David Healy (Commodore Goddard), Jeremy Wilkin (Morton, Attendant), Gary Files (Holt)

First aired: Nov/17/1967
Writer: Stephen J. Mattick, Dick Conway
Director: Ken Turner
Guest star: Jeremy Wilkin (2nd Student, Radiographer), Paul Maxwell (General J. F. Tiempo, Porter Benson), Gary Files (Dr Turner, 1st Student), Charles Tingwell (Morgan), Martin King (Dr Magnus), Liz Morgan (Nurse)

First aired: Nov/24/1967
Writer: Tony Barwick
Director: Ken Turner
Guest star: Gary Files (Captain Indigo, 1st Warden, 3rd Warden), Martin King (2nd Warden, 3rd Warden), Paul Maxwell (World President), Charles Tingwell (General Peterson), Jeremy Wilkin (Dr Giadello)

First aired: Dec/01/1967
Writer: Tony Barwick
Director: Robert Lynn
Guest star: Shane Rimmer (Mason), Gary Files (Kramer, Croupier, Security Chief), Martin King (Steele, Attendant), Jeremy Wilkin (Barman)

First aired: Dec/08/1967
Writer: Tony Barwick
Director: Alan Perry
Guest star: Gary Files (Doig), David Healy (Kruger), Martin King (Carl, Guard), Jeremy Wilkin (Lookout)

First aired: Dec/15/1967
Writer: Tony Barwick
Director: Robert Lynn
Guest star: Jeremy Wilkin (Control), David Healy (Lunar Controller), Martin King (Orson), Gary Files (Pilot)

First aired: Dec/22/1967
Writer: David Williams, Peter Curran
Director: Robert Lynn
Guest star: Charles Tingwell (Captain Hassel), Martin King (MCA Tanker Driver's Mate), David Healy (General Cope, Major Brooks), Paul Maxwell (Supreme Commander), Jeremy Wilkin (Colonel Storm, Robot), Gary Files (Arab, Security Bank Voice)

First aired: Dec/29/1967
Writer: Bill Hedley
Director: Ken Turner
Guest star: Jeremy Wilkin (Andre Verdain, Commissionaire), Liz Morgan (Helga), Sylvia Anderson (Gabrielle)

First aired: Jan/05/1968
Writer: Peter Curran, David Williams
Director: Alan Perry
Guest star: Charles Tingwell (Fairfield), Paul Maxwell (Fire Chief), Jeremy Wilkin (Jackson)

First aired: Jan/19/1968
Writer: Ralph Hart
Director: Brian Burgess
Guest star: Martin King (Sergeant, Airstrip Voice), Jeremy Wilkin (Captain, Security Man), Paul Maxwell (Commander), Charles Tingwell (Base Concord Controller), Gary Files (Major Reeves)

First aired: Jan/26/1968
Writer: Tony Barwick
Director: Ken Turner
Guest star: Jeremy Wilkin (Shroeder), David Healy (Frazer), Sylvia Anderson (Linda Nolan)

First aired: Feb/02/1968
Writer: Tony Barwick
Director: Robert Lynn
Guest star: Jeremy Wilkin (Angelini), Paul Maxwell (Breck), Charles Tingwell (Carter)

First aired: Feb/09/1968
Writer: Tony Barwick
Director: Brian Burgess
Guest star: Jeremy Wilkin (Dr Kurnitz, Captain Black), Charles Tingwell (Lt. Dean), Sylvia Anderson (Receptionist)

First aired: Feb/16/1968
Writer: Bryan Cooper
Director: Ken Turner
Guest star: Martin King (Oil Worker), Jeremy Wilkin (Kinley), David Healy (Jason Smith), Gary Files (Charlie Hansen)

First aired: Feb/23/1968
Writer: Tony Barwick
Director: Alan Perry
Guest star: Jeremy Wilkin (Major Gravener), Gary Files (Sergeant), Martin King (Baxter), Liz Morgan (Nurse), David Healy (Mitchell)

First aired: Mar/01/1968
Writer: Tony Barwick
Director: Robert Lynn
Guest star: Gary Files (Photographer Joe, Flight Desk), David Healy (Dr Conrad), Martin King (Bill Williams), Jeremy Wilkin (Reporter), Liz Morgan (Airport Tannoy)

First aired: Mar/08/1968
Writer: Leo Eaton
Director: Leo Eaton
Guest star: Jeremy Wilkin (Dr Denton, Spectrum (New York)), Martin King (Captain), Gary Files (Engineer, Security Guard), Sylvia Anderson (Judith Chapman)

First aired: Mar/12/1968
Writer: Tony Barwick
Director: Ken Turner
Guest star: Jeremy Wilkin (Rhodes), Martin King (Hotspot Control, Guard), David Healy (General Rebus), Gary Files (Neilson)

First aired: Mar/26/1968
Writer: Shane Rimmer
Director: Leo Eaton
Guest star: Martin King (Raynor, Captain, Operator), Gary Files (Driver, Lumberjack), Jeremy Wilkin (Dr Sommers)

First aired: Apr/02/1968
Writer: Peter Curran, David Williams
Director: Brian Burgess
Guest star: David Healy (President Roberts), Gary Files (Mervin Brand), Jeremy Wilkin (Tribune Control Operator), Sylvia Anderson (Vice President's Wife), Martin King (Vice President)

First aired: Apr/09/1968
Writer: David Lee
Director: Alan Perry
Guest star: Gary Files (Professor G. A. Carney, Conrad Olafson, Guard 2), Martin King (Guard 1)

First aired: Apr/16/1968
Writer: Shane Rimmer, Tony Barwick
Director: Alan Perry
Guest star: Shane Rimmer (Pilot), Martin King (Navigator), Gary Files (Sergeant), David Healy (Major Moran)

First aired: Apr/23/1968
Writer: Tony Barwick
Director: Alan Perry
Guest star: Jeremy Wilkin (Joe Johnson), Charles Tingwell (A42 Pilot), David Healy (Major Stone), Gary Files (Phil Machin)

First aired: Apr/30/1968
Writer: Tony Barwick
Director: Leo Eaton
Guest star: Gary Files (Williams), Shane Rimmer (Sergeant)

First aired: May/07/1968
Writer: Tony Barwick
Director: Ken Turner

First aired: May/14/1968
Writer: Tony Barwick
Director: Ken Turner
Guest star: Jeremy Wilkin (3rd Policeman, Shroeder), David Healy (Colgan, Frazer, Commodore Goddard), Charles Tingwell (Macey, 4th Policeman), Sylvia Anderson (Linda Nolan), Gary Files (Waiter, Holt), Paul Maxwell (1st Policeman), Martin King (2nd Policeman)