All irregularities will be handled by the forces controlling each dimension. Transuranic heavy elements may not be used where there is life. Medium sub-atomic weights are available. Gold, Lead, Copper, Jet, Diamond, Radium, Sapphire, Silver and Steel. Sapphire and Steel have been assigned.
Season One: 14 episodes
Ep | PN | Airdate | Title |
| Assignment One: Escape Through a Crack in Time |
1 | | Jul 10/79(UK) | Part 1 |
2 | | Jul 12/79(UK) | Part 2 |
3 | | Jul 17/79(UK) | Part 3 |
4 | | Jul 19/79(UK) | Part 4 |
5 | | Jul 24/79(UK) | Part 5 |
6 | | Jul 26/79(UK) | Part 6 |
| Assignment Two: The Railway Station |
7 | | Jul 31/79(UK) | Part 1 |
8 | | Aug 02/79(UK) | Part 2 |
9 | | Aug 07/79(UK) | Part 3 |
10 | | Aug 09/79(UK) | Part 4 |
11 | | Oct 30/79(UK) | Part 5 |
12 | | Nov 01/79(UK) | Part 6 |
13 | | Nov 06/79(UK) | Part 7 |
14 | | Nov 08/79(UK) | Part 8 |
Season Two: 10 episodes
Ep | PN | Airdate | Title |
| Assignment Three: The Creatures' Revenge |
15 | | Jan 06/81(UK) | Part 1 |
16 | | Jan 08/81(UK) | Part 2 |
17 | | Jan 13/81(UK) | Part 3 |
18 | | Jan 15/81(UK) | Part 4 |
19 | | Jan 20/81(UK) | Part 5 |
20 | | Jan 22/81(UK) | Part 6 |
| Assignment Four: The Man Without a Face |
21 | | Jan 27/81(UK) | Part 1 |
22 | | Jan 29/81(UK) | Part 2 |
23 | | Feb 03/81(UK) | Part 3 |
24 | | Feb 05/81(UK) | Part 4 |
Season Three: 6 episodes
Ep | PN | Airdate | Title |
| Assignment Five: Dr. McDee Must Die |
25 | | Aug 11/81(UK) | Part 1 |
26 | | Aug 12/81(UK) | Part 2 |
27 | | Aug 18/81(UK) | Part 3 |
28 | | Aug 19/81(UK) | Part 4 |
29 | | Aug 25/81(UK) | Part 5 |
30 | | Aug 26/81(UK) | Part 6 |
Season Four: 4 episodes
Ep | PN | Airdate | Title |
| Assignment Six: The Trap |
31 | | Aug 19/82(UK) | Part 1 |
32 | | Aug 24/82(UK) | Part 2 |
33 | | Aug 26/82(UK) | Part 3 |
34 | | Aug 31/82(UK) | Part 4 |