On the jungle planet Spiridon, the Doctor, Jo and a Thal group find a slumbering army of Daleks ready to awaken.
| Writing | Terry Nation | Writer |
| Directing | David Maloney | Director |
| Sound | Dudley Simpson | Original Music Composer |
| Production | Barry Letts | Producer |
| Camera | Elmer Cossey | Camera Operator |
| Costume & Make-Up | Hazel Pethig | Costume Design |
| Editing | Dave Thomas | Editor |
| Lighting | Derek Slee | Lighting Director |
| Costume & Make-Up | Jean McMillan | Makeup Artist |
| Sound | Tony Millier | Sound |
| Art | John Hurst | Production Design |
| Writing | Terrance Dicks | Script Editor |
| Crew | Dick Mills | Special Sound Effects |
| Production | George Gallaccio | Production Assistant |
| Visual Effects | Clifford Culley | Visual Effects Designer |
