One quirk of the work book sale is that most of the time there is an accompanying press release tucked inside the cover. The title for my post is attributed to a review in Starburst Magazine in the press release, for a previous, short story version of this tale.
It's a highly entertaining Tom Baker-era story. The Doctor has no companion, and given that the story is set in 1978 it seems likely that completists will therefore place it between The Invasion of Time and The Ribos Operation. Something is amiss at the Fetch Brothers Golf Spa Hotel on the outskirts of Arbroath - several guests have disappeared and there's some sort of telepathy going on. The hotel receptionist Bryony Mailer meets the Doctor, and along with one of the hotel guests they set about investigating. Without giving spoilers I can say it involves an eccentric old lady, her eerie twin grandchildren, and a very old life form. It's a very archetypal Who story, and written with a mischievous sense of humour that makes it clear the author is a fan, for example "Tea and cake or horrible and increasing danger. Either one would be lovely", or "... the incredibly large number of planets which looked mostly like abandoned quarries." It's not just the plot, but the way in which it is presented, that makes it feel right.