Marcus, the central character in I'll Let You Go, has—sort of—schizophrenia, and the novel's theme revolves around the implications of his schizophrenia for his family and friends. That doesn't begin to capture the nature of this work, however. Marcus has a psychotic episode while a student at Oxford, recovers, develops a highly successful career as a talent agent in Hollywood, and marries the beautiful daughter of one of the richest men in the world. His bride's father, as a surprise wedding gift, builds an exact replica of a beautiful ruined tower the couple had loved in Europe. This gift is so overwhelming that Marcus decamps on his wedding night and spends the next 11 years homeless—and convinced that he is William Morris, the design genius of Victorian England—while his devastated bride, pregnant with his child, embarks on a career of substance abuse and promiscuity. Her father is preoccupied with a design competition for his own burial place.