Cast: Felix Aylmer (Old Man), Kenneth J. Warren (Whittaker), Joseph Furst (Chislenkan), Eric Young (Ho Ling), Burt Kwouk (Chinese Major), Anthony Chinn (Chinese Commander)
Written By: Dennis Spooner
Directed By: Cyril Frankel
Ep: 2
The Invisible Man
Cast: Peter Wyngarde (John Hallam), Basil Dignam (Sir Frederick Howard), Aubery Morris (Van Velden), James Culliford (Charles Sumner), Steve Plytas (Boursin), David Prowse (Weightlifter)
Written By: Donald James
Directed By: Cyril Frankel
Ep: 3
Reply Box No. 666
Cast: George Roubicek (Semenkin), Anton Rodgers (Jules), Imogen Hassall (Cleo), George Murcell (Nikko), Brian Worth (Bourges), Nike Arrighi (Corinne), Linbert Spencer (Clive)
Written By: Philip Broadley
Directed By: Cyril Frankel
Ep: 4
The Experiment
Cast: Allan Cuthbertson (Cranmore), Caroline Blakiston (Marion Grant), Madalene Nicol (Dr. Margaret Daniels), Philip Bond (Officer), Nicholas Courtney (Dr. Farley), David Bauer (Dr. Glind), Russell Waters (Barman), Nita Lorraine (Susan), Jonathan Burn (Jean), Peter J. Elliott (Paul)
Written By: Tony Williamson
Directed By: Cyril Frankel
Ep: 5
Happening
Cast: Michael Gough (Joss), Jack MacGowran (Banner), Grant Taylor (General Winters), Bill Cummings (Aston)
Written By: Brian Clemens
Directed By: Cyril Frankel
Ep: 6
Operation Deep-Freeze
Cast: Patrick Wymark (General Gomez), Walter Gotell (Captain Jost), Robert Urquhart (Hemmings), Peter Arne (Margoli), Dallas Cavell (Ship's Captain), George Pastell (Colonel Santos), Michael Godfrey (Mendoza), Martin Boddey (Commander Gregson), Derek Sydney (Zerilli), Alan White (Hoffner)
Written By: Gerald Kelsey
Directed By: Paul Dickson
Ep: 7
The Survivors
Cast: Clifford Evans (Franz / Colonel Reitz), Donald Houston (Richter), Bernard Kay (Emil), John Tate (Schmeltz), Frederick Schiller (Mine Attendant), John Porter Davison (Hans), Stephen Yardley (Pieter), Hugo Panczak (Heinz)
Written By: Donald James
Directed By: Cyril Frankel
Ep: 8
To Trap a Rat
Cast: Guy Rolfe (Walter Pelham), Kate O' Mara (Jane Purcell), Edina Ronay (Sandra), Michael Standing (Edwards), Toke Townley (Peanut Vendor), John Lee (Ambulance Doctor), Michael Guest (Ambulance Man)
Written By: Ralph Smart
Directed By: Sam Wanamaker
Ep: 9
The Iron Man
Cast: George Murcell (El Gaudillo), Patrick Magee (Pedraza), Stephen Berkoff (Carlos), Robert Crewdson (Callezon), Michael Mellinger (General Tornes), Norman Florence (Cabello)
Written By: Philip Broadley
Directed By: John Moxey
Ep: 10
The Ghost Plane
Cast: Andrew Keir (Dr. John Newman), Michael Wynne (Coates), Tony Steedman (Hardwick), Hilary Tindall (Vanessa), Dennis Chinnery (Bridges), Derek Murcott (Admiral), Paul Grist (Pilot), John Bryans (Crolic)
Written By: Donald James
Directed By: John Gilling
Ep: 11
The Dark Island
Cast: Vladek Sheybal (Max Kellor), Alan Gifford (Admiral), Bill Nagy (Controller), Benito Carruthers (Perango), Andy Ho (Kai Min), Richard Bond (Radar Operator), Brandon Brady (Withers), Robert Lee (Tsi Chang)
Written By: Tony Williamson
Directed By: Cyril Frankel
Ep: 12
The Fanatics
Cast: Gerald Harper (Croft), Julian Glover (Anderson), Donald Pickering (Colonel Banks), David Morrell (Krasner), Barry Stanton (Faber), John Robinson (Collings), David Burke (Roger Carson)
Written By: Terry Nation
Directed By: John Gilling
Ep: 13
Twelve Hours
Cast: Mike Pratt (Raven), Peter Howell (Admiral Cox), John Turner (Lieutenant Commander Street), John Stone (Naval Captain), Viola Keats (Madame Drobnic), Henry Gilbert (Drobnic), Laurie Asprey (Jackson), Rio Fanning (Telegraphist)
Written By: Donald James
Directed By: Paul Dickson
Ep: 14
The Search
Cast: John Woodvine (Kruger Haller), Reginald Marsh (Conrad Schultz), Joseph Furst (Dr. Rudolf Mueller), Patricia English (Suzanne Taylor), Ernst Walder (Allbrecht), Gabor Baraker (Innkeeper)
Written By: Dennis Spooner
Directed By: Leslie Norman
Ep: 15
The Gilded Cage
Cast: John Carson (Symons), Jennie Linden (Samantha), Clinton Greyn (Lovegrove), Charles Houston (Orley), Tony Caunter (Brandon), Sebastian Breaks (Haswell), Vernon Dobtcheff (Manager)
Written By: Philip Broadley
Directed By: Cyril Frankel
Ep: 16
Shadow of the Panther
Cast: Zia Mohyeddin (Prengo), Donald Sutherland (David Crayley), Tony Wall (Riley), Hedger Wallace (Charters), Christopher Carlos (Doctor), Kenneth Gardnier (Waiter)
Written By: Tony Williamson
Directed By: Freddie Francis
Ep: 17
A Case of Lemmings
Cast: Edward Brayshaw (Del Marco), John Bailey (Umberto), Jeanne Roland (Claudine), Michael Graham (Jacquet), Michael Slater (Pillet), Olive McFarland (Madame Carnot), Jacques Cey (Frenchman), Madge Brindley (Frenchwoman)
Written By: Philip Broadley
Directed By: Paul Dickson
Ep: 18
The Mission
Cast: Anthony Bate (Pederson), Dermot Kelly (Hogan), Patricia Haines (Sophia), Harry Towb (George), Robert Russell (Maltman), Paul Hansard (Emil Boder)
Written By: Donald James
Directed By: Robert Asher
Ep: 19
The Interrogation
Cast: Colin Blakely (Interrogator)
Written By: Dennis Spooner
Directed By: Cyril Frankel
Ep: 20
The Silent Enemy
Cast: Paul Maxwell (Captain Baxter), Warren Stanhope (Admiral Parker), James Maxwell (Stanton), Marne Maitland (Minoes), Esmond Knight (Minister), David Blake Kelly (Lighthouse Keeper), Rio Fanning (Lighthouse Keeper)
Written By: Donald James
Directed By: Robert Asher
Ep: 21
The Body Snatchers
Cast: Bernard Lee (Squires), Ann Lynn (Inge Kalmutt), Phillip Locke (Yeats), J.G. Devlin (Frank Nicholls), Gregory Phillips (David Fenton), Christina Taylor (Lee Rogers), Fredric Abbott (White)
Written By: Terry Nation
Directed By: Paul Dickson
Ep: 22
Get Me Out of Here!
Cast: Frances Cuka (Anna Maria Martes), Ronald Radd (Commandante), Philip Madoc (Angel Martes), Eric Pohlmann (Minister), Anthony Newlands (Cuevos), Godfrey Quigley (Josef), Norman Florence (Police Captain), Richard Montez (Detective)
Written By: Ralph Smart
Directed By: Cyril Frankel
Ep: 23
The Night People
Cast: Terence Alexander (Douglas Trennick), Adrienne Corri (Mrs. Trennick), David Lodge (Porth), Anne Sharp (Jane Soames), Michael Bilton (Dan), Walter Sparrow (George Whetlor), Jerold Wells (Hoad), Frank Thornton (Clerk)
Written By: Donald James
Directed By: Robert Asher
Ep: 24
Project Zero
Cast: Rupert Davies (Voss), Peter Copley (Antrobus), Geoffrey Chater (Forster), Reginald Jessup (Grayson), Jan Holden (Miss Davies), Nicholas Smith (Postmaster), Donald Morley (Sloane), John Moore (Travis), Maurice Browning (Wittering), John Horsley (Chairman), Eric Lander (Hedges), Jill Curzon (Stewardess), Bruce Beeby (Pilot)
Written By: Tony Williamson
Directed By: Don Sharp
Ep: 25
Desert Journey
Cast: Jeremy Brett (The Bey), Roger Delgado (Yusef), Peter Madden (Sheikh), Nik Zaran (Said), Reg Lye (Curtis), Henry Soskin (Branco), Tony Cyrus (Major Tuat), Yole Marinelli (Sonia)
Written By: Ian Stuart Black
Directed By: Paul Dickson
Ep: 26
Full Circle
Cast: Patrick Allen (Paul Westerman), Martin Benson (Garcian), John Nettleton (Booker), Gabrielle Drake (Sarah), Jack Gwillim (Carrington), James Donnelly (Pickering), Lawrence James (Sergeant Fairfax), Victor Brooks (Collins)
Written By: Donald James
Directed By: John Gilling
Ep: 27
Nutcracker
Cast: William Squire (Duncan), David Langton (Lord Mauncey), Michael Barrington (Manager), John Franklyn-Robbins (Warre), John Brown (Walcott), David Kelsey (Travers), Dervis Ward (Guard), Robert Mill (Assistant)
Written By: Philip Broadley
Directed By: Roy Ward Baker
Ep: 28
The Final Countdown
Cast: Alan MacNaughtan (Von Splitz), Wolf Frees (Dr. Neimann), Derek Newark (Kruger), Basil Henson (Wolf Eisen), Morris Perry (Schultz), Hannah Gordon (Anna), Norman Jones (Heiden), Michael Lees (Tom Brooks)
Written By: Gerald Kelsey
Directed By: John Gilling
Ep: 29
The Gun-Runners
Cast: William Franklyn (Hartington), Paul Stassino (Guido Selvameni), David Lodge (Filmer), Guy Deghy (Schroeder), Eric Young (Police Captain), Wolfe Morris (Nadkarni), Nicholas Chagrin (Clerk)
Written By: Dennis Spooner
Directed By: Robert Asher
Ep: 30
Autokill
Cast: Eric Pohlmann (Barka), Paul Eddington (Klein), Harold Innocent (Dr. Amis), Richard Owens (George Brading), Rachel Herbert (Loretta Brading), Conrad Monk (Mechanic), Bruce Boa (American Colonel)
