“Ghost Light”, Chapter 7: “Ace’s Adventures Underground”

On these albums

Doctor Who: The Earth Adventures CollectionVictor Pemberton read by David Troughton, Terrance Dicks read by Tom Baker, David Fisher read by Susan Engel & John Leeson, Eric Pringle read by Nerys Hughes & Marc Platt read by Ian Hogg · 2019

Source: MusicBrainz recording a8dad129-9a83-4c52-a1de-906c0e3fd04f (CC0).