The international sensation Iain M. Banks offers readers a deeply imaginative, wittily satirical tale, proving once again that he is "a talent to be reckoned with" ("Locus"). In "Excession", the Culture's espionage and dirty tricks section orders Diplomat Byr Gen-Hofoen to steal the soul of a long-dead starship captain. By accepting the mission, Byr irrevocably plunges himself into a conspiracy: one that could either lead the universe into an age of peace or to the brink of annihilation.

A dare goes awry when Ali tries on a stolen madcap and is afflicted with psychotic delusions that will not go away. "Cured" by a mindplayer, Ali is soon forced to become one herself or face a prison sentence as a "mind criminal."

The protagonist in the story is Nell, a thete (or person without a tribe; equivalent to the lowest working class) living in the Leased Territories, a lowland slum belt on the artificial, diamondoid island of New Chusan, located offshore from the mouth of the Yangtze River, northwest of Shanghai. At the age of four, Nell receives a stolen copy of an interactive book, Young Lady's Illustrated Primer: a Propædeutic Enchiridion, in which is told the tale of Princess Nell and her various friends, kin, associates, &c., originally intended for the wealthy Neo-Victorian "Equity Lord" Chung-Sik Finkle-McGraw's granddaughter. The story follows Nell's development under the tutelage of the Primer, and to a lesser degree, the lives of Elizabeth and Fiona, girls who receive similar books. The Primer is intended to steer its reader intellectually toward a more interesting life, as defined by "Equity Lord" Alexander Chung-Sik Finkle-McGraw, and growing up to be an effective member of society. The most important quality to achieving an "interesting life" is deemed to be a subversive attitude towards the status quo. The Primer is designed to react to its owners' environment and teach them what they need to know to survive and develop.

The plot centers around Chevette Washington, a young bicycle messenger who lives in the ad hoc, off-the-grid community that has grown on the San Francisco-Oakland Bay Bridge in the aftermath of a devastating earthquake. Chevette, on a whim, steals a pair of dark-rimmed glasses from a man at a party because she is offended by his demeanor. Soon after, she realizes that the glasses have unlikely importance, as security company henchmen begin tracking and following her. Among the pursuers are Svobodov and Orlovsky, two Russian immigrants who reside in San Francisco and are employed as cops, as well as Loveless, a ruthless corporate hitman with gold incisors. The glasses contain plans by a powerful corporation to rebuild San Francisco entirely using nanotechnology, and for that reason, they are highly coveted and present a danger to the person who possesses them.

As the new millennium approaches, cults, sects, and crackpot prophets flood the worldwide media. But for Michael Arcangelo none of their catastrophe theories are more frightening than the Goodknight virus. Michael suspects it is the work of a mysterious programming genius, who designed it to create a computer role-playing game so real it can kill. Now Michael and his team of techno-wizards must descend into a harrowing and convoluted world of reality and fantasy. But what they discover is even worse than they could have ever imagined. For the so-called game is already out of hand, the virus has taken over the Internet, harnessing the power of the millennial frenzy already sweeping the world. And if they don't find and defeat the twisted mastermind responsible, humanity will wake from its worst nightmare to find the end of the world is truly here.