On Earth to collect the third segment to the Key to Time, the Doctor and Romana encounter modern day druids in Cornwall making blood sacrifices to Cailleach, the goddess of war and magic, at a megalithic circle known as The Nine Travelers. The Tracer says the third segment is there, then says it isn't, which is very odd.
Did You Know?
For location shooting, K-9 was equipped with a small microphone and speaker, so that John Leeson
could hear and interact with the other actors from a van parked nearby. One day, while waiting for a scene to be set-up, Tom Baker
sat down near K-9 and began working on the Times crossword (Leeson's hobby), conversing with Leeson through the remote link. Without thinking about it, Leeson remained in character. He was later told that several young fans, who had come by to watch the production, were quite amazed by what appeared to be the Doctor and K-9 working on the puzzle together. See more
[entering dwelling alone
Hello? Anybody home?
Nobody home except us druids.