Cover of Necessity

Necessity

core novel 2016 Thessaly

Record

First published2016
Original language EN
Work typenovel
Canon statuscore
Reader rating3.93 (1,907 ratings, collected 2026-09-14)
First-edition ISBN9780765379023
Internal chronology3

Synopsis

Forty years after the descendants of Plato's Just City experiment were relocated to a distant planet in the twenty-sixth century, Necessity opens on a pivotal day: Apollo's long-maintained mortal form dies, returning him to his full divine powers, at the very same moment that a human spaceship from Earth makes first contact with the isolated, philosophically minded civilization he helped found. Apollo quickly discovers that his sister Athena has vanished into the Chaos existing outside ordinary time itself, apparently in pursuit of forbidden knowledge, and her rescue becomes the driving concern of the novel, unfolding through intrigue, time travel, and encounters with alien gods. Familiar figures such as Sokrates and Giovanni Pico della Mirandola reappear alongside a wider cast of ordinary citizens, as the series' long-running experiment in philosophy and society faces its final test.

Where it sits

  • Universe: Thessaly
  • Series: The Thessaly trilogy core; position 3 of 3 in the series' recorded order
  • Author: Jo Walton

Neighbouring works

Publication order and internal chronology are tracked as two separate orderings, but they resolve to the exact same sequence for this book, so one combined line is shown instead of two identical ones.

  • Reading order, within the series The Thessaly trilogy: position 3 of 3: previous The Philosopher Kings (2015)

Sources

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Part of the Library. Fields without an identified source are omitted, never guessed.