Books by R.J. Mercer
The Serpent's Eye
YA Adventure · Book 1
R.J. Mercer writes fast-moving YA adventure fiction built around ancient mythology and modern stakes — stories for readers who want to go somewhere they have never been.
The Threshold Hunters follows 19-year-old Mark Sterling through a world of hidden artifacts, forgotten orders, and accelerating danger. The Codex of Thresholds is a five-book mythology. The Serpent's Eye is where it begins — and it's available in ebook, print, and full-cast audiobook.
R.J. Mercer is published by Cornerstone House Press, an imprint of Cornerstone House Publishing, based in Wichita, Kansas.
Yes — the mythology builds across all five books. Start with The Serpent's Eye. Each book delivers a complete adventure, but the story compounds with every entry.
Yes — The Serpent's Eye is available in full-cast audiobook format. Check the book page for current listening options.
Five — one for each artifact in the Codex of Thresholds. The series has a planned ending and a designed arc from Book 1 to Book 5.