On the planet Xeros, the TARDIS crew discover their own future selves frozen in time as exhibits in a galactic museum and must avert this potential future.
| Writing | Glyn Jones | Writer |
| Directing | Mervyn Pinfield | Director |
| Production | Verity Lambert | Producer |
| Writing | Dennis Spooner | Script Editor |
| Art | Spencer Chapman | Production Design |
| Costume & Make-Up | Daphne Dare | Costume Design |
| Crew | Peter Diamond | Fight Choreographer |
| Costume & Make-Up | Sonia Markham | Makeup Artist |
| Crew | Brian Hodgson | Special Sound Effects |
| Lighting | Howard King | Lighting Director |
| Sound | Ray Angel | Sound |
