In England, 1066, the Doctor confronts a mysterious Monk who is attempting to change history.
| Directing | Douglas Camfield | Director |
| Writing | Dennis Spooner | Writer |
| Writing | Donald Tosh | Script Editor |
| Production | Verity Lambert | Producer |
| Sound | Charles Botterill | Music |
| Art | Barry Newbury | Production Design |
| Crew | David Anderson | Fight Choreographer |
| Costume & Make-Up | Daphne Dare | Costume Design |
| Costume & Make-Up | Sonia Markham | Makeup Artist |
| Lighting | Ralph Walton | Lighting Director |
| Sound | Ray Angel | Sound |
