I was attracted to this book by the title; I found something mysterious and romantic about it. I have to say, I didn't find the story itself especially evocative of either. That's not to say it's a bad story, or that there's no mystery or romance at all. But it doesn't live up to the hopes I had based on the title.
The book is set in a future where Earth is a distant memory, and human civilization is made up of descendants of people forced to flee Earth by catastrophe. They have settled a network of planets connected by lanes powered by alien technology, known as the Waywork. There is no sign of these hugely advanced aliens, and not many of their artifacts left behind. One starstate with oppressive, vaguely Soviet undertones is gradually overpowering all others within the Waywork.
We experience the story from the point of view of a few different characters - a senior politician in the autocratic Starstate Nautilan, an admiral in the plucky underdog navy of another starstate, a powerful merchant's son, and an aristocrat's daughter with an interest in the aliens and what they've left behind. I found the characters within the book to be drawn with a bit too much of a heavy hand for my taste. The Nautilan politician is cartoonishly power obsessed and callous, the merchant's son is noble but reluctant, the aristocrat is inexperienced but determined, and so on.
When a new pathway opens up in the Waywork, these characters all find themselves racing to take control of a new system, which contains a habitable world, a huge alien pyramid and more valuable secrets. I found the politics of their world and some of the technical details plausible and interesting - though some were a bit odd. The author talks about ships using a kind of ring system where starships circle around a central point to vary which of them are vulnerable to enemy fire... but it isn't exactly explained how this works given that space is 3D, or how it makes much difference given that weapons are primarily missiles and anti-missiles. For the most part things rang true though, with huge distances and timescales appropriate to space battle.
There are battles fought, mysteries uncovered, and lots of cunning tricks by the good guys to even the odds against the evil Starstate Nautilan and their larger forces. There's also some slightly odd religious and philosophical asides that I feel is part of a larger story that may have been covered in other books by the author? They didn't entirely seem to gel with the rest of the plot here though.
Overall I just felt the book lacked... heart, maybe? No - it has heart, but it wears that heart on its sleeve. And that weakened the story for me, because it felt like there was less to discover about the characters, and less chance for surprises in the plot. This is a story of good vs evil, and we know how that tends to turn out in fiction. The ending is also basically a setup for another book, rather than resolving anything much at all, so that also didn't help my impression. I don't regret reading the book, but I don't feel inclined to go seeking out any other books set in the same universe either.