Oaths
An action-packed new Progression Fantasy series from the bestselling author of Mark of the Fool.
Claim the ultimate reward or pay the ultimate price.
Betrayed and left with a life-crushing debt by a treacherous business partner, Wurhi is left with little choice — break into a palace haunted by sorcery and plunder it's mysterious riches for all they're worth.
Wurhi has the lock picking and burglary down as an experienced Rogue, but it'll take more than that to survive. Wits, speed, and a tumultous partnership with a penniless, hellfire-wielding, demon-slayer named Kyembe the Spirit Killer.
From burning desert city-states, to ogre-infested forests and haunted mountains, Wurhi and Kyembe will face a world of tyrants, monstrous cultists, power-mad merchant princes, and ambitious wizards to win an ever growing pile of treasure.
Wealth beyond wildest dreams awaits.
…and woe to any enemy that stands in the way, as long as they can find a way to work together, that is...
Don't miss the next action-packed Progression Fantasy series from J.M. Clarke, bestselling author of Mark of the Fool and Rune Seeker. It's perfect for fans of Unbound, Wraithblade, Rage of Dragons, and The Witcher!
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J.M. Clarke
Long before the Mark of the Fool series became a sensation among fantasy readers, J.M. Clarke was quietly shaping the kind of stories he wanted to see in the world—tales where magic doesn't come easy, choices carry weight, and heroes grow not through destiny, but through grit and consequence. It was never about following a blueprint; it was about building a world that felt lived-in, flawed, and full of wonder.
A Canadian at heart and storyteller by instinct, Clarke didn’t emerge from the traditional publishing pipeline. Instead, his journey began during the stillness of the pandemic, when he started sharing his writing online. What began as a creative outlet quickly evolved into a phenomenon. Mark of the Fool—a progression fantasy known for its compelling magic system, emotionally grounded characters, and sly humor—racked up nearly 10 million views on Royal Road and went on to sell over 100,000 eBooks. The series didn’t just find an audience—it struck a chord with readers hungry for fantasy that balanced powerful storytelling with authentic emotional arcs.
Oaths, Blood, and Coin
Oaths, Blood, and Coin consists of one book and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.
