The sequel trilogy left a specific, awkward hole: Rey’s parents sold her for drinking money on Jakku, and were then murdered, and were also — somehow — the son of Palpatine and his wife. Shadow of the Sith is the book that has to make that a story rather than a plot device, and the surprising thing is that it does, by treating it as a horror chase.
The hunt
Dathan and Miramir are running, with a small daughter, from Ochi of Bestoon — a Sith assassin who is patient, unhurried and entirely without interiority. Christopher writes the pursuit from both ends and keeps the pressure constant. Ochi is the best thing in the novel precisely because he is not given a philosophy; he is a contractor with an unusual client and a long time horizon.
Dathan
The genuine achievement. Palpatine’s failed clone — a man grown to be a vessel, who turned out to have no connection to the Force at all and was therefore useless — is written as somebody who has spent his whole life being told he is a defective object, and who has decided that his daughter will not be. It retroactively makes the sequel trilogy’s worst piece of exposition into something with weight.
Luke and Lando
Two men in their fifties with unfinished business. Luke is chasing visions of a world called Exegol and cannot make the Force give him a straight answer. Lando has been looking for his kidnapped daughter for six years and has run out of leads. Their partnership is warm, tired and specific, and Christopher resists every opportunity to make either of them the man he was in 1983.
Tone
Darker than the canon shelf usually permits — there is real dread in the middle third, and the ending is a burial rather than a rescue. The Sith material is handled as haunting rather than as power fantasy, which is the correct instinct for a period in which the Sith are supposed to be extinct.
Where it strains
The novel carries a heavy continuity load and occasionally buckles under it — several sequences exist to explain a line from The Rise of Skywalker rather than because the story needs them. The prose is functional. And Christopher gives Luke a great deal of mystical searching that resolves less satisfyingly than the human material around it.
Who should read it
Anyone who found the sequel trilogy’s treatment of Rey’s parentage unsatisfying and would like it fixed, and anyone who wants the best canon novel set in the long gap after Return of the Jedi. It requires the films and nothing else.