Skip to main content
book cover for A Sigil of Darkness

A Sigil of Darkness

Sign In or Register Now to see if this title is available for request.

Buy on Amazon Buy on BN.com Buy on Kobo
*This page contains affiliate links, so we may earn a small commission when you make a purchase through links on our site at no additional cost to you.
Book 1 of The Immortal Seals

Send NetGalley books directly to your Kindle or Kindle app


1

To read on a Kindle or Kindle app, please add kindle@netgalley.com as an approved email address to receive files in your Amazon account. Click here for step-by-step instructions.

2

Also find your Kindle email address within your Amazon account, and enter it here.

Pub Date Oct 17 2025 | Archive Date May 15 2027


Talking about this book? Use #ASigilofDarkness #NetGalley. More hashtag tips!


Description

What if we had it all wrong? What if the forces of Heaven and Hell were not enemies, but allies?

Long ago, the persistent war between Heaven and Hell nearly led both armies of Angels and Demons to eradication. Fighting for eons over dominion of souls—a source of power for God and Satan—many from both armies were forever vanquished from their realm of existence. As their numbers dwindled, the souls became unstable and negatively impacted God and Satan—the Divine—for the worse.

In hopes to replenish their armies and regain order within the realms, the Divine agreed to a cease fire and created Overworld, a new realm where the souls of the dead may thrive in peace. And with it, a new government of Ancients were conjured to restore the realms to their former glory. What seemed like a solution to the chaos would be a decision the Divine would most certainly regret…

Betrayal! The Ancients saw the vulnerability of the Divine and turned on their creators. They summoned an army so vast, the Divine had no choice but to form a necessary alliance. And when imminent obliteration loomed upon the Divine, they were forced to retreat and locked themselves in Heaven and Hell by the Immortal Seals. Seals that were so powerful, they were fabled to never be broken.

The Ancients, however, are cunning. And what was once eternal may not be so… Centuries later, Isaiah Cayde met his unfortunate demise when he was murdered in cold blood. But just because he is dead, does not mean his life is over. Cayde awakens as a soul and bares a sigil with incredible essence and is being hunted by malevolent entities known as Lost Revenants. Limited on friends in the afterlife, he must not only find out who marked him with this sigil, but why?

Time is ticking and the path before him will alter the existence of every human, every soul, and Heaven and Hell themselves. The wheel of fate is in motion as a more deviant and sinister plan is about to unfold…

What if we had it all wrong? What if the forces of Heaven and Hell were not enemies, but allies?

Long ago, the persistent war between Heaven and Hell nearly led both armies of Angels and Demons to...


Advance Praise

"This book slaps." - Notyourbookboyfriend.

"If Magnus Chase and the Gods of Asgard, Shadowhunters, and The Lord of the Rings had a book baby, this would be it — and I absolutely loved it." -Mythic Manuscripts

"A fantasy debut that unexpectedly swept me off my feet!" -Author Kayla Nunn

"I would LOVE to collab with Dex Harker." -NYT best-selling author, Brandon Sanderson (Not really but that would be awesome lol)

"This book slaps." - Notyourbookboyfriend.

"If Magnus Chase and the Gods of Asgard, Shadowhunters, and The Lord of the Rings had a book baby, this would be it — and I absolutely loved...


Marketing Plan

Hello book friends/future Death Slayers!

With book two coming out in 2027, I am looking for avid lovers of plot-driven fantasy to read my debut novel and potentially join my street team. Right now, ASoD has an average star rating of 4.79 on goodreads from ARC readers and patrons who purchased the book. I would love for everyone willing to leave an honest review! My goal is to have 1000 reviews by the new year and hoping you all can help!

If you love it, please do not hesitate to reach out to me on instagram @dexharkerofficial so we can jump up and down and be happy. And as always, recommend it to a friend. 

I'll be seeing you... 

Dex Harker

Hello book friends/future Death Slayers!

With book two coming out in 2027, I am looking for avid lovers of plot-driven fantasy to read my debut novel and potentially join my street team. Right now...


Available Editions

EDITION Ebook
ISBN 9781069816214
PRICE CA$2.99 (CAD)
PAGES 451

Available on NetGalley

NetGalley Reader (EPUB)
NetGalley Shelf App (EPUB)
Send to Kindle (EPUB)
Send to Kobo (EPUB)
Download (EPUB)

Available to Buy

Buy on Amazon Buy on BN.com Buy on Kobo
*This page contains affiliate links, so we may earn a small commission when you make a purchase through links on our site at no additional cost to you.

BISAC Codes

FIC009070 FICTION / Fantasy / Dark Fantasy