Cover of Defender
of the Flame

Defender of the Flame

by Sylvia Engdahl

The Captain of Estel trilogy, Book One

An adult science fiction novel that may also be enjoyed by mature high school age readers.

Starship pilot Terry Radnor is elated to be among those chosen to defend the secret colony Maclairn against enemies who pose a threat to the spread of paranormal human mind powers. He commits himself wholly to the goal of that world, not guessing how far his effort to safeguard it will take him from everything else he cares about--his promising career as a Fleet officer, contact with people who share his newly-discovered psi capability, his wife and unborn child. Torn away against his will after learning a secret too deep for its disclosure to be risked, he is forced into exile from all that has previously mattered to him, and must build a perilous new life far from Maclairn, grounded without hope of fulfilling his earlier pledge. Yet a mysterious and extraordinary destiny has been predicted for Terry, and against all odds fate puts him in place to confront the colony s greatest peril.

This is the first book in the Captain of Estel trilogy. While it follows the Founders of Maclairn duology consisting of Stewards of the Flame and Promise of the Flame, it is a completely separate and quite different story set two hundred years later that does not depend on having read them. Though intended for adults, the trilogy will also be of interest to older teens who have enjoyed Enchantress from the Stars and The ar Side of Evil, since its second and third books deal in part with the Service that appears in those novels. (Please note that unlike Engdahl's YA novels, all five of these contain some material inappropriate for readers below high school age.)


"The book profits from Engdahl s long experience as a professional writer, assuring an engaging read." --Brenncke's Review Blog "Reaches back to the brio and speculation of Engdahl's classic books of the Seventies." --Literary critic Nicholas Birns "These novels are not so much genre ... 'Science Fiction' as they are Literature. These are novels about life." --Jacqueline Lichtenberg


Purchase the ebook edition of Defender of the Flame at Amazon, Amazon UK, Barnes & Noble, Apple Books, Kobo, Smashwords, or Google Play.

Publication History
Ad Stellae (pb & eb) - 2013
Ad Stellae (audio) - 2024

In omnibus edition The Captain of Estel (eb) - 2024

In omnibus editions with former series title "The Rising Flame" (no longer available)
Ad Stellae (eb) - 2015
Ad Stellae (pb) - 2016
Ad Stellae (eb) - 2021

Purchase the paperback and/or audiobook edition at Amazon. (The print version can be ordered from other booksellers but at a higher price due to distribution costs.)

See more quotes from reviews of Defender of the Flame.

Read the description of the Captain of Estel trilogy.

Read the FAQ about the Captain of Estel trilogy.

Read an excerpt from the story.