A March into Darkness is a novel written by American author Robert Newcomb.

[1][2] The story tells of Prince Tristan, as he is summoned by the Heretics to join them beyond the Tolenka Mountains.

To help spur the prince along they send Xanthus, a binary being (half-man, half darkling), to torture the citizens of Eutracia until Tristan agrees to go.

She personally plans to kill Tristan for the death of her husband Wulfgar and their stillborn daughter, Clarice.

With the help of the Heretics, to whom she is now able to commune with, Serena sets a plan into motion that will rock the Conclave to its very core.