The White Road (Nightrunner Series #5)

Dissolute nobles, master spies, and the unlikeliest of heroes, Alec and Seregil have survived exile, treachery, and black magic. But the road that lies ahead is the most hazardous they’ve ever traveled. For with enemies on all sides, they must walk a narrow path between good and evil where one misstep might be their last.
 
Having escaped death and slavery in Plenimar, Alec and Seregil want nothing more than to go back to their nightrunning life in Rhíminee. Instead they find the…