Inkwalker

Daniel is an Inkwalker. A guardian of justice.

Damien is a Necromancer, a sworn enemy of the Inkwalker.

But Damien is also an Inkwalker. And an influential person in the city. Once called the "city of the Moon", the desert oasis is crumbling. The solar and lunar magic collectors have all but stopped working. A plague is found in the city streets, And Damien blames Daniel.

Naming him as a vigilatnte, Damien puts a price on the Inkwalker's head, taking his place as the guardian of the city.

But some surprising and disturbing things come to light, both about the Necromancer, and the city itself, and in the end, only the brothers, and some of their new friends can save the city from the plague.