The Space Between Worlds, Micaiah Johnson

There is a multiverse. The histories of several hundred universes are close enough to our own to permit travel between them. But jumping to a world in which you exist is invariably fatal - the multiverse is unforgiving in this regard. As a result, the most valuable travellers are those already dead in other worlds. Something that's all too easy for the poor and dispossessed in our ruined post-apocalyptic world.

What an excellent debut novel! Every part of it works brilliantly - from its well-drawn (and frequently-duplicated) characters, through the slow-reveal of its setting, to the unfolding of its satisfyingly twisty plot. The author takes what's now become a familiar trope - the parallel world - and spins off their own fresh version, complete with duplicate-prohibition, a travellers mythology of how Mother Nature enforces it, and a zeitgeisty meditation on a class- and race-stratified society.

Early on, I had a feeling of overfamiliarity with its post-apocalyptic dystopian future, but it didn't take long to reveal itself as something more unique, and cleverly so to boot. In particular, its use of duplicated characters - some very familiar between worlds, some very different - is excellent. Both in illuminating the vicissitudes of life's paths, and making for a wonderfully finely-tuned plot as the narrator, Cara, leverages her growing knowledge of the multiverse to topple the tyrant that rules the one she has come to call home.

For sci-fi, it's worth remarking that the writing is well above and beyond too. It's sparing but hits the sweet spot of world building while avoiding "Basil Exposition". Ditto, its characters are far more subtly drawn than the genre typically manages, which works particularly in a plot that requires its actors multiple shades.

Overall, simply excellent. (And a novel that practically screams "make me into a film".)