A nice spin on Roger Zelazny's classic series. The second in the series of three Amber books by Betancourt.
Haven't read this one yet, somehow ended up with 2 copies.
From back cover: CHAOS AND AMBER continues the tale of Oberon, as he, his father, Dworkin, and Oberan's half-brother, Aber, journey through the shadow world closest to the Courts, known as 'the Beyond.'
The Courts of Chaos are hostile to Dworkin and his kin, and potentially deadly to Oberon--who barely survives several attempts on his life. Dworkin disappears after leaving for a meeting with King Uthor, ruler of the Courts. This leaves Oberon and Aber to uphold the family's honor on their own.
But with the Beyond so close to Chaos, they know that their enemies are nearby, and probably spying on their every move.