The Hand of Oberon

In the fourth installment of the Amber series, chaos erupts as family blood is shed on the Pattern that formed Amber. Led by Lord Corwin, the princes and princesses embark on a desperate quest to uncover the fate of their missing father, Oberon, and the dark forces behind the mysterious black road uniting Amber with the multiverse known as Shadow. Amidst their perilous journey, they must also confront the unsettling truth that a traitor lurks among them.