Mad Tinker Chronicles Books in Order

The Mad Tinker books sit inside J.S. Morin's larger Twinborn world, but they have their own strong identity. Where the earliest Twinborn novels lean on linked worlds, magic, and political intrigue, this branch pushes harder into rebellion, invention, and steampunk-flavored warfare. It is still epic fantasy, just with more gears, more sabotage, and a lot more dangerous engineering.

The story revolves around Cadmus Errol, the Mad Tinker, a legendary inventor whose brilliance stretches across worlds, and Rynn, the daughter talented enough to challenge his legacy. On one world, Cadmus is a genius whose clockwork and machines have made him famous. On another, darker world, humanity lives under the rule of the kuduks, and technical skill becomes a weapon as much as a craft. That split is one of the big pleasures of the series. Morin keeps asking what invention can do when the people using it are trapped, watched, or outgunned.

Rynn gives the books their heartbeat.

She is not a distant chosen one or a polished court hero. She is practical, angry, smart, and willing to learn by stealing knowledge wherever she can find it. Her storyline brings the rebellion down to ground level. You see workshops, airships, slave uprisings, improvised alliances, and the constant question of whether freedom can be built before it can be won. Cadmus, meanwhile, plays a bigger and more dangerous game, one that stretches across worlds and long timelines.

That means the series works on two scales at once. On one side, it is about the hands-on business of building machines, outwitting enemies, and keeping a movement alive. On the other, it is about competing plans for the future, and about how much damage a brilliant person can justify if the cause feels right enough. Morin does not turn invention into pure heroism. In these books, every breakthrough can become a threat.

The airships help.

So do the rival inventors, the secret plans, and the sense that world-shaping events are being driven by people who still have grease on their hands. If you like epic fantasy that makes room for workshops and prototypes, rather than only thrones and prophecies, the Mad Tinker side of Twinborn has a very specific charm.

It is also worth knowing that these books were later folded into the larger Twinborn Chronicles line. So even though they can feel like a distinct subseries, they are not a side road. They expand the same universe, widen the conflict, and change what readers understand about the worlds Morin built from the start. In practical terms, that makes them the point where Twinborn gets bigger, stranger, and much more combustible.