加思·尼克斯生于1963年，是一位澳大利亚幻想小说作家，毕业于澳大利亚的堪培拉大学。1984年，加思·尼克斯发表了自己的处女作。随后，他移居悉尼，并曾担任一家重要跨国出版机构的高级编辑。1996年，加思·尼克斯创作了古国三部曲的开篇之作《萨布莉尔》，这部书囊括了澳大利亚最主要的幻想文学奖之一奥瑞丽斯奖的最佳奇幻小说奖和最佳青少年小说奖。古国三部曲的后两部小说《莉芮尔》和《阿布霍森》分别出版于2001年和2003年。加思·尼克斯最重要的作品还包括“第七高塔”以及“王国之匙”系列小说。目前，他和妻儿定居于悉尼。

Sent to a boarding school in Ancelstierre as a young child, Sabriel has had little experience with the random power of Free Magic or the Dead who refuse to stay dead in the Old Kingdom. But during her final semester, her father, the Abhorsen, goes missing, and Sabriel knows she must enter the Old Kingdom to find him. She soon finds companions in Mogget, a cat whose aloof manner barely conceals its malevolent spirit, and Touchstone, a young Charter Mage long imprisoned by magic, now free in body but still trapped by painful memories. As the three travel deep into the Old Kingdom, threats mount on all sides. And every step brings them closer to a battle that will pit them against the true forces of life and death—and bring Sabriel face-to-face with her own destiny. With Sabriel , the first installment in the Abhorsen trilogy, Garth Nix exploded onto the fantasy scene as a rising star, in a novel that takes readers to a world where the line between the living and the dead isn't always clear—and sometimes disappears altogether.