And Then There Were (N-One), by Sarah Pinsker, was clever and great fun and just a little unsettling. Sarah Pinsker receives an invitation from an alternate universe version of herself to attend a conference – SarahCon – at which all the other attendees are Sarah Pinskers from different universes. And then a Sarah Pinsker dies under suspicious circumstances and so Sarah Pinsker, who is an insurance investigator and the closest thing they have to a detective, is asked to try to find out what happened.
This is a fascinating exploration of the different choices people make through life, and their consequences. Some of the Sarah Pinskers are from very closely related strands, others from remote ones – what sent them there? Some of them are still with university girlfriends, others are single or have new partners, one of them invented the Transdimensional Portal, but four others very nearly did and were just not as fast.