In Finch, mysterious underground inhabitants known as the gray caps have reconquered the failed fantasy state Ambergris and put it under martial law. They have disbanded House Hoegbotton and are controlling the human inhabitants with strange addictive drugs, internment in camps, and random acts of terror. The rebel resistance is scattered, and the gray caps are using human labor to build two strange towers. Against this backdrop, John Finch, who lives alone with a cat and a lizard, must solve an...