Written by Dennis Spooner
"Are you quite mad? You know as well as I do the golden rule about space and time travelling. Never, never interfere with the course of history."
| Episode Title | Premiere Date |
| The Watcher | 03/07/1965 |
| The Meddling Monk | 10/07/1965 |
| A Battle Of Wits | 17/07/1965 |
| Checkmate | 24/07/1965 |
The TARDIS lands on the Northumbrian coast, where new companion Steven discovers a Viking helmet and the Doctor deduces they must have arrived in the 11th century. Steven remains sceptical, especially when he and Vicki encounter what appears to be a Saxon hunter with a modern wristwatch. Investigating a nearby monastery, the Doctor discovers further anachronisms. Who is the mysterious monk observing the time travellers' every move, and why is he so interested in the outcome of the Battle of Hastings?
Cast & Crew
The Doctor: William Hartnell
Vicki: Maureen O'Brien
Steven Taylor: Peter Purves
Monk: Peter Butterworth
Edith: Alethea Charlton
Eldred: Peter Russell
Wulnoth: Michael Miller
Producer: Verity Lambert
Director: Douglas Camfield
Scriptwriter: Dennis Spooner
