A Sinister Darkness Grows. Winterhaven Chronicles, #1

At the edge of human civilization, a young knight investigates a most unusual murder which threatens to bring chaos to the duchy of Winterhaven. As great lords scheme to expand their power, a long festering darkness is about to break into the open. And Dhrugal of Edgefield together with his brothers and sister, are all that stands between the duchy and a new War of Night. This volume contains the books: Winterhaven, The First Snows, and The Blood of Torons.
Winterhaven: In the far-off Duchy of Winterhaven at the edge of human civilization, a young knight investigates a most unusual murder while the Great Lords of the land scheme to expand their borders and take control of the duchy. A decade of relative peace is about to collapse and only young Dhrugal of Edgefield and his brothers and sister stand between Winterhaven and a sinister darkness. The First Snows: Sane men spend the winter season bundled up in their homes near the fire praying for spring to come, so insanity must be on the rise in Winterhaven.
With the tenuous unity of the Great Lords fractured by the failures of the duke's army in the west and the accusations of heresy against his son, new armies are secretly mobilizing even in this bitterest of seasons. Yet can even knights as great as William Lord Tavistock and Sir Conn of Edgefield lead armies to victory after the first snows have fallen?The Blood of Torons: Duke Maldon may have suffered the shame of seeing his family's heresy exposed, but that doesn't mean that the duke and his kin are out of the fight.
Launching their most insidious scheme yet, they succeed in transforming a victory celebration uniting the duchy's leading families into a bloody battlefield that ignites a civil war. And with the great families of Winterhaven doing their best to kill each other, no one seems to notice the far greater dangers arising on the border, threatening to overrun them all. No one, that is, but the weakest members of the tragically divided Toron family.
Dhrugal and his brothers saved the duchy once, but can they do so again with the streets of the city running red with The Blood of Torons?