Oath of Fealty - Paladin's Legacy

For the first time in nearly twenty years, Elizabeth Moon returns to the thrilling realm of her superb Deed of Paksenarrion trilogy.
 
Thanks to Paks's courage, the long-vanished heir to the half-elven kingdom of Lyonya has been revealed as Kieri Phelan, a formidable mercenary who earned a title-and enemies-in the neighboring kingdom of Tsaia, where Prince Mikeli suddenly faces the threat of a coup. Acting swiftly, Mikeli strikes at the powerful family behind the attack: the Verrakaien, magelords steeped in death and evil. Mikeli's survival-and that of Tsaia-depend on the only Verrakai whose magery is not tainted with innocent blood. Two kings stand at a pivotal point in the history of their worlds. For dark forces are gathering against them, knit in a secret conspiracy more sinister and far more ancient than they can imagine.