Where do mysteries come from? Nobody knows. But they end here. This is England, and this magnificent pile is Bluebell End. It is the ancestral seat of the famous occult investigator Lord Zimbabwe. His is the realm of the unknown, the field of twilight and the tenebral. He is a walker in the ether, a lord of the ectoplasm.
Ectoplasm was a short-lived BBC radio sitcom written by and starring Dan Freedman and Nick Romero. It featured the adventures of Lord Zimbabwe, a paranormal investigator, his colleague Doctor Lilac, and his butler Theremin.It can be found online here.
This show provides examples of:
Adventurer Archaeologist: Mary casually mentions escaping from a cursed tomb down a tunnel with "all darts and a massive stone ball rolling down it".
Shout-Out: To the opening of the 1964 film of First Men in the Moon: A Flash Forward shows a 1960s American moon expedition discovering evidence that Lord Zimbabwe's expedition got there decades before. Though in this version, the note they find reads "[static] off, signed Theremin."