We're back in post-war England. There's less emphasis on austerity, and more on social stirring: people coming back in new patterns who cannot clearly be identified. At least, that's the plot: it doesn't affect the social setup at all.This isn't one of her finesst. The initial setup is groovy, with the pre-announced murder; the hard part though is to justify this, and she doesn't quite manage that.
About half way through I guess that Lettie is really Lottie - actually I hadn't noticed that unimportant but cute detail of nicknames at that point; but I guessed the sister-swap. That allows everything to fall into place neatly. The important points are then Charlotte's "disfigurement" - carefully never inquired into, though it would be natural to - and Blackie's always wearing a pearl choker (would our current govt approve of chokers, I wonder?). Our Ag needs to show us this a few times, and to hide that does her best to draw your attention to the red herring of whether the pearls are real or not, but she didn't fool me. Notice also the detail: although the pearls, if real, would be valuable and thus a possible motive, the police nonetheless never bother to find out, a sure sign that we don't really care.
Having to kill Bunny is almost good; doing it via the use-my-pills would be fine; and yet it seems doubtful to me, psychology-wise. There's also the dodginess of what was actually in the pills that killed her; this is never mentioned, let alone where Blackie might have got them.
Minor: the original excuse - that Rudi had come to England from Switzerland to learn how to do hotelling - now seems entirely absurd to the extent of being a joke. Would it have been so then? I rather suspect so.
But back to the main part: the staged murder. This is entirely too elaborate. All the moving around in darkness is error prone; getting back before someone finds their lighter would be unpredictable; all this might be managed by a career criminal but not by an otherwise law-abiding spinster. Other trivia: the lights are fused by pouring water on the wires; yet mysteriously, when the lights come back, all this water has disappeared. Blackie has had her ear nicked, but no doctor looks at it and goes "hmm, odd, that's a cut not a bullet wound". And Rudi is killed, in the dark, with one short, by a woman who has never fired a gun before; this is more a trope: that when necessary, a single gunshot will kill, and the shooter will be so certain of this that they will not bother fire twice.
And with all that: was it necessary or even vaguely sensible? If you're impersonating someone in order to inherit, the last thing you want is a murder and police crawling all over your house. Killing Rudi somewhere quiet would make more sense; or really just not killing him at all would make more.
Drowning Mitzi - a vigourous young woman - in the sink by Blackie - a frail old lady - is not plausible (nor, in a sink full of dishes, is it even particuarly possible; and certainly Mitzi would have been cut and bruised by bashing against the dishes; this bit really isn't well thought out). However, Miss Marple would have looked pretty damn stupid if instead Blackie had picked up a carving knife and stabbed her to death. Speaking of which, Miss M had suspicions of the L[eo]ttie swap before Murgatroyd's death, which she could likely have prevented had she told Plod. But because she - like Our Author and We The Readers - is obsessed with certainty over the murder's identity, she is obliged by plot tropes to not mention it.
And lastly, the entire bizarre elaborate setup of the will to construct the financial incentive nesseary for the plot is... bizarre and elaborate and unnatural. But only mentioning it a third of the way in is quite nice, in that it leaves us wondering what we've failed to notice in what we've already read. But having Blackie not mention it when asked by Plod for motives is cheating - also rather pointless cheating, because she does mention it a chapter or so later.





