"And Then There Were (N-One)" is a 2017 science fiction/murder mystery novella by Sarah Pinsker. It was first published in Uncanny Magazine.
When physicist Sarah Pinsker is murdered at SarahCon — an interdimensional convention where everyone is Sarah Pinsker from a different alternate timeline — only insurance investigator Sarah Pinsker can solve the case.
This is the story that made me fall in love with Sarah Pinsker's writing. In an alternate world full of Sarah Pinskers, we know who dunnit. The joy of this closed room murder mystery is getting to the which one? And why?
Numerous versions of Sarah Pinsker from different multiverses get together for a convention on an isolated island. But when a murder takes place, it is up to an investigative version of Pinsker to figure out who did it.
As in mysteries of this sort, the clues are scattered throughout the story, and it might be possible for an attentive reader to figure out who is the suspect. But the motive is science fictional and would involve a yearning for living a different life, when the numerous Sarah Pinskers have already lived multiple lives.
