The Promethean Flame
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To Be Mortal by H L Ferrier (promethean_scrollsmith)
Fandoms: Percy Jackson and the Olympians - Rick Riordan
12 Feb 2026
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Summary
Witness the first steps towards a full-scale Olympian civil war!
7 years after The Trials of Apollo, the mythological world is at peace. Olympus remains unchallenged, Percy and Annabeth have grown up and matured.
Enter two new characters: A human scientist who refuses to look away, and a demigod with a mysterious past. Their arrival shakes the foundations of the mythological world and reveals just how fragile its peace is.
To Be Mortal is the first of a planned four book series: The Promethean Flame. A series that aims to expand the lore of the PJO universe, while also exploring the clash between mythology and human science. All with a generous helping of slow-burn romance, of course!
Percy, Annabeth, Rachel, and more are here, older and wiser; but this is a new story, built on the foundations of the old.
(Three Acts, ten chapters each. New chapters every Thursday)
Series
- Part 1 of The Promethean Flame