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 |
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| Assignment One: Escape Through a Crack in Time |
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| 1 | | Jul 10/79(UK) | Part 1 |
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| 2 | | Jul 12/79(UK) | Part 2 |
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| 3 | | Jul 17/79(UK) | Part 3 |
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| 4 | | Jul 19/79(UK) | Part 4 |
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| 5 | | Jul 24/79(UK) | Part 5 |
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| 6 | | Jul 26/79(UK) | Part 6 |
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| Assignment Two: The Railway Station |
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| 7 | | Jul 31/79(UK) | Part 1 |
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| 8 | | Aug 02/79(UK) | Part 2 |
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| 9 | | Aug 07/79(UK) | Part 3 |
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| 10 | | Aug 09/79(UK) | Part 4 |
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| 11 | | Oct 30/79(UK) | Part 5 |
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| 12 | | Nov 01/79(UK) | Part 6 |
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| 13 | | Nov 06/79(UK) | Part 7 |
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| 14 | | Nov 08/79(UK) | Part 8 |
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Season Two: 10 episodes
| Ep | PN | Airdate | Title |
|---|
| Assignment Three: The Creatures' Revenge |
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| 15 | | Jan 06/81(UK) | Part 1 |
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| 16 | | Jan 08/81(UK) | Part 2 |
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| 17 | | Jan 13/81(UK) | Part 3 |
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| 18 | | Jan 15/81(UK) | Part 4 |
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| 19 | | Jan 20/81(UK) | Part 5 |
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| 20 | | Jan 22/81(UK) | Part 6 |
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| Assignment Four: The Man Without a Face |
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| 21 | | Jan 27/81(UK) | Part 1 |
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| 22 | | Jan 29/81(UK) | Part 2 |
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| 23 | | Feb 03/81(UK) | Part 3 |
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| 24 | | Feb 05/81(UK) | Part 4 |
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Season Three: 6 episodes
| Ep | PN | Airdate | Title |
|---|
| Assignment Five: Dr. McDee Must Die |
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| 25 | | Aug 11/81(UK) | Part 1 |
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| 26 | | Aug 12/81(UK) | Part 2 |
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| 27 | | Aug 18/81(UK) | Part 3 |
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| 28 | | Aug 19/81(UK) | Part 4 |
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| 29 | | Aug 25/81(UK) | Part 5 |
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| 30 | | Aug 26/81(UK) | Part 6 |
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Season Four: 4 episodes
| Ep | PN | Airdate | Title |
|---|
| Assignment Six: The Trap |
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| 31 | | Aug 19/82(UK) | Part 1 |
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| 32 | | Aug 24/82(UK) | Part 2 |
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| 33 | | Aug 26/82(UK) | Part 3 |
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| 34 | | Aug 31/82(UK) | Part 4 |
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