The Locked Tomb
series of books by Tamsyn Muir

The Locked Tomb is a series of science fantasy novels by New Zealand author Tamsyn Muir. It is published by Tor Books.
Publishing history
Novels
Short fiction
Muir has published four works of short fiction that fill in the gaps between the novels. The first of these short stories, "The Mysterious Study of Doctor Sex" (2020), is set a few years prior to Gideon the Ninth and focuses on Palamedes and Camilla. "As Yet Unsent" (2022), an epistolary story from the point of view of Captain Deuteros, takes place between the events of Harrow the Ninth and Nona the Ninth. Both were published on Tor.com. Both "As Yet Unsent" and the short story "Blood of Eden Memorandum for Record" were also included with paperback and e-book editions of Harrow the Ninth. "The Unwanted Guest" was included in the paperback version of Nona the Ninth, and takes place during the events of Nona the Ninth, and is told in the form of a one-act play.
Main characters
Gideon Nav
Harrowhark Nonagesimus
Ianthe Tridentarius
John Gaius
Camilla Hect
Palamedes Sextus
Nona
Reception
Critical response
The series has been well received by critics, with praise for its handling of fantasy, horror, gothic, and science fiction genres, prose, and characterization. The series' handling of lesbian themes has also been praised.
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