There are 5 books in the The Traitor Son Cycle series. The newest book is The Fall of Dragons which came out in 2017.

1
The Red Knight

Book cover of The Red Knight
Forget George and the Dragon. Forget Sir Lancelot and tales of Knightly exploits. This is dirty, bloody work. This is violent, visceral action. This is a mercenary knight as you've never seen one before. Twenty eight florins a month is a huge price to pay, for a man to stand…
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2
The Fell Sword

Book cover of The Fell Sword
When a mercenary and his company are charged with putting down a local rebellion, the consequences will be larger than they ever imagined in this action-packed sequel to The Red Knight.

Loyalty costs money. Betrayal, on the other hand, is free.

When the Emperor is taken hostage, the Red Knight…

3
The Dread Wyrm

Book cover of The Dread Wyrm
The Red Knight will fight his greatest foe yet, a warlike knight who plans to claim the throne of Alba for himself in the third book of The Traitor Son Cycle.

Some are born to power. Some seize it. And some have the wisdom never to wield it.

The Red…

4
The Plague of Swords

Book cover of The Plague of Swords
With more at stake than ever before, The Red Knight faces an uncertain future and is forced to team up with old enemies to defeat a greater evil in the fourth book in the Traitor Son Cycle.

One enemy has fallen. But a greater one still remains. Now, it's war.…

5
The Fall of Dragons

Book cover of The Fall of Dragons
Miles Cameron is the master of intrigue and action-packed battles in this epic tale of magic and mercenaries, war, depravity, and politics, the final book of the Traitor Son Cycle.

In the climax of the Traitor Son Cycle, the allied armies of the Wild and the Kingdoms of men and…