Written by David Renwick
Directed by David Sant
Paula Wilcox was one of the stars of Man About the House and may also be known for her roles in Coronation Street and Emmerdale as well as Upstart Crow. Her genre credits include Grantchester and A Touch of Frost.
Raquel Cassidy is probably best known for her role as Miss Baxter in Downton Abbey and an appearance in Doctor Who. In this household however she is a favorite for her performance as Miss Hardbroom in the recent TV adaptation of The Worst Witch. She also has some genre credits appearing in episodes of Poirot, Law & Order: UK and Midsomer Murders.
Finally I have to mention Kieran Hodgson who became familiar to me during lockdown last year for his Youtube channel where he posts what he calls bad impressions. The draw for me was this series of reenactments of early Doctor Who.
A rare example of an inverted impossibility – an idea that Renwick handles pretty well though the pacing is a touch slow.
An actress seems to have been stabbed moments after entering a dressing room that is under observation from the outside. Meanwhile Polly Creek learns of the death of her father and investigates if there is a secret in her parents’ past.
If there’s one thing I like even more than impossible crimes it is an inverted mystery. That makes The Letters of Septimus Noone then something of a treat as it represents one of the very rare instances where those two subgenres combine and we get a case where we know the solution from the start. The question is then how will Jonathan reach that solution.
The setup for this case is handled quite well, carefully laying out the reasons behind the stabbing as well as the silence of those who have information that could clear the whole mess up. Those motivations struck me as pretty compelling, even if they are misguided.
I have suggested before that I rather like impossibilities that are created unintentionally and this is a perfect example of that. Characters make decisions based on their understanding and priorities with little thought as to how this will look from the outside to a third party. The case that develops is not particularly complex but suits this episode’s short running time and the need to fit alongside another more personal plot.
It should not surprise then that given the simplicity of the case, finding the solution comes down to spotting a single clue. Some may feel a little disappointed that Jonathan doesn’t actually deduce every step of the solution for himself and prove a case but I don’t think that would have fitted this story or the themes it had been developing.
Running through this, in one of the better comedic subplots from the show’s later years, is the idea that Jonathan has unwillingly acquired an intern of sorts – Ridley, a student returning from university who idolizes him and thinks he can perform the same feats of deduction. The jokes are somewhat predictable (and perhaps recall Miracle in Crooked Lane a little too much) but they are delivered well by Kieran Hodgson, culminating in an entertaining spin on the gathering all the suspects trope.
That other plot involves the sudden death of Polly’s father and the discovery of a box of letters. The mystery here is harder to summarize, in part because some aspects are introduced relatively late in the episode, but it is much more focused on exploring matters of grief and how we come to terms with the idea that we may not know someone as well as we thought.
As with the stabbing case the deductions required here are not particularly challenging. One of them will likely leap off the screen to viewers as soon as they see it, particularly given it’s an idea Renwick has used elsewhere. Still, I appreciated that the episode was trying to give us a different sort of case than we had seen before on the show and I liked that it was personal to Polly as I think it helps us understand her better and also provides a transition for the show into slightly new ground.
Beyond that I don’t have a lot else to say. I think that says rather a lot about this episode compared to those from the previous couple of seasons and the various specials. This is slighter than some offering two relatively simple puzzles but it also feels much more cohesive in terms of its themes and ideas. The comedic elements and the personal drama sits comfortably alongside the central mystery rather than fighting each other for dominance. It’s arguably comfortable and perhaps unambitious compared to those stories, fitting comfortably into the time slot and playing out at a rather leisurely pace. Still, I found it likable and I think it does a good job overall of completing the transition of Jonathan into a more comfortable, settled middle age.
That said I do have one point of enormous frustration. This episode completely pointlessly gives away some of the plot from The Mystery of the Yellow Room. Bah!