This book is science fiction, released by Tor Books on 16 October 2018. It’s Book #2 of the Interdependency Series and runs 320 pages. The Collapsing Empire, Book #1 of the series, was a finalist for a Hugo Award in 2018. This review contains spoilers.

This book picks up immediately where The Collapsing Empire leaves off. Flow physicist Marce Claremont is offering his father’s research for review, which predicts the collapse of the Flow streams in the very near future. This will mean that transportation and commerce along these pathways will soon also fail. The only habitable planet in the Empire is End, and the various space habitats will soon be isolated. There is already a civil war going on for control of End. Emperox Grayland II is having prophetic visions about the collapse, which is convincing to the public, but not the Church hierarchy or the nobility. Grayland is planning to put Nadashe Nohamapetan on trial for treason for attempted assassination of the emperox, and has assigned Kiva Lagos as caretaker of her estate. Meanwhile, the Wu family is plotting with the Countess Nohamapetan to take over the throne. Claremont’s data attracts a challenge from Flow physicist Hatide Roynold. The two of them put their work together and predict the Flow will reestablish after a period of instability, which has already reopened a path to the lost Dalasysla habitat. The Emporox sends an expedition there to check for survivors, and Claremont is surprised to find evidence the Flow was manipulated in the past to isolate the Empire. Meanwhile more streams are failing. Can Grayland II keep control of the Empire? How can she plan for the future?

Like The Collapsing Empire, this is a quick, entertaining read. Scalzi’s strong point is in the plotting and the politics, where he plays the different factions against one another in a cat and mouse game for power and influence. The dialog tends to the snappy and cynical, and the nobility comes off as self-absorbed and somewhat hedonistic. The power players are mostly women and Emperox Grayland II shows considerable growth in this installment, moving from an inexperienced girl to a woman controlling the reins of power.

On the not so great side, this is all brash, surface-level entertainment, which means there’s no depth in the characters. The snappy dialog really is great in producing interesting players, but then Scalzi treats them as expendable—don’t get attached to any of them. Kiva Lagos seems almost a caricature, and her sexual exploits seem slyly contrived as a hook for some readers. Also on the negative side, Scalzi hasn’t done much in the way of projection into the future. We meet a couple of advanced AIs, but most of the population is still using “computers” and “tablets” the same way we do now. Surely a space-going population like this would have better technology.

A fun read, but not much depth. Three and a half stars.