The courts of chaos

Book 5 of the Chronicles of Amber. The fate of Oberon, the identity of the traitor-prince, and the plot to destroy Amber have been discovered. Now, can Corwin and his siblings divert the storm of Chaos descending upon Amber and all her shadows? How will they know ally from enemy, truth from lies, and Chaos from Order? In the end, the future of all rests upon Corwin's determination, and upon the horn of the unicorn....