Episode Details
Originally broadcast February 28, 2014
Season Five, Episode One
Preceded by The Clue of the Savant’s Thumb
Followed by The Sinner and the Sandman
Written by David Renwick
Directed by David Sant
Familiar Faces
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.

The Verdict
A rare example of an inverted impossibility – an idea that Renwick handles pretty well though the pacing is a touch slow.
Episode Summary
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.
My Thoughts
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!
Thanks for the link to the bad impressions. An Unearthly Child is brilliant.
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Glad you enjoyed!
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I remember hating the inverted framing of this at the time, but upon second viewing I was more amenable to what Renwick had tried to do. Seemed a real shame, though, to have the “warring sleuths” trope not played out in a traditional mystery format — surely it’s much better to see how different deductions are drawn from the same information…
And, yes, for spoiling The Mysetry of the Yellow Room — nakedly, pointlessly, idiotically, purely just because he bloody well can — Renwick goes right to the bottom of the class.
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I suspect I probably did too. I was pleasantly surprised to realize we were in inverted territory – I had no conception how rare that was when I saw it before. It’s also a nice nod to Columbo which I remember Renwick saying was an influence on creating this series.
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I really don’t like this one. The inverted plot is an original set-up for the series, but Jonathan’s presence in the story feels so halfhearted and lackluster with several other plot strands thrown in to simply pad out the runtime. The comedy and the drama *really* feel awkward here; this is probably one of the darkest episodes of the show and the humor does nothing to juxtapose or heighten that drama. It’s just an uncomfortable mish-mosh. I am happy that you found some positives in this one, but whenever I revisit Jonathan Creek, this is an episode I tend to skip over…and the rest of Season Five for that matter…
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Also, the disappearing ashes sub-plot could only work if Paula Wilcox’s character had forgotten something ,,, (just what is omitted to avoid a spoiler, but really!)
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