This book should not work.

The first few chapters are “and then this person arrived in this place that has no right to exist”. Sometimes the person or family group have some explanation about who they are or why they’re travelling; sometimes their background is incredibly vague. There are hints and vague hand-wavings at what might be coming in the future because of a particular character, and then it takes a hundred pages for anything like that to happen. There are possibly-magical occurrences, there are references that make it sound like you’ve missed the first two books in the trilogy (Our Lady of Tharsis…) and it takes FOREVER until there is something resembling a narrative.

This book absolutely works. And I don’t know why.

Well, I do: it’s because McDonald is an astonishing storyteller, and all of those things that seem wrong just become utterly intriguing and compelling. Someone who manages to make a time machine because a green person pops up at their camp as they travel across the desert? OK. Triplets who may or may not be clones; twins who split the rational and the mystical between them; someone who has an uncanny way with machines… yep, fine. I’ll read it. People are adults at 10 years old? Oh right, it’s Mars, and the Martian year is 2/3 longer again than an Earth year. So yes, actually, that’s fine.

Imagine writing this, and selling this, as one of your first books.