Doctor X and the Caverns of Andostar

You may be looking for The Caves of Androzani (TV story).

Doctor X and the Caverns of Andostar, also known as simply The Caverns of Andostar, was a notorious "missing episode" of the cult sci-fi TV series Doctor X, one of many which were not recovered after the company producing Andostar went bankrupt and its film archive was demolished to make way for a landfill.

On 23 November 2020, Giles, who had been looking for missing episodes for some time, believed he had found perhaps the only surviving copy of Doctor X and the Caverns of Andostar, and he purchased it from a vendor on eBay When it arrived, he began recording an unboxing of the episode for his YouTube channel, but he quickly discovered that it wasn't a film reel but a DVD, which differed from the item description. Regardless, Giles opened the case, and all the technology in P.R.O.B.E.'s headquarters went down due to a curse placed on the DVD, so that it took Maxie Masters two days to fix everything. In the meantime, Giles traced the seller's IP address to a caravan site in Bedfordshire, which was a ruse to get Giles away from P.R.O.B.E. so that the deceitful seller could steal a Nolvox control node from the Dr Smith shelf. (WC: Doctor X ^[+]Loading...["Doctor X (webcast)"])