Count Grendel isn’t exactly a subtle villain; he’s more from the Snidely Whiplash school of baddies. This makes him a phenomenally effective enemy for any seven year-olds in the audience. Our son loved to hate this guy, and named him “the most jerk in the history of people who are jerks!”
I think Peter Jeffrey knew exactly how to pitch his performance to this age group. Part three of the adventure is definitely of the “escape and run around just to get recaptured” school of Doctor Who third parts, but the big set piece is the Doctor getting out of a trap that the count has set. Four of Grendel’s guards all go down in a group when K9 zaps them, and Grendel gives this unbelievably cartoon-like reaction, and our son exploded laughing. Then in part four, Grendel ties Romana to the railroad tracks – er, I mean, schemes to force her to marry the injured king, and our son did everything but boo and hiss like the crowd at a pantomime.
So no, not very much nuance in this story, but there is a pretty good swordfight in part four, and K9 gets left adrift in a little boat, and our kid loved that, too. Since the first half of the story left him grumbling, it’s good that everything got turned around in the end.