Walter Jon Williams is an author, traveler, kenpo fiend, and scuba maven. After an early career as a historical novelist, he switched to science fiction. His first novel to attract serious public attention was Hardwired (1986), described by Roger Zelazny as "a tough, sleek juggernaut of a story, punctuated by strobe-light movements, coursing to the wail of jets and the twang of steel guitars." In 2001 he won a Nebula Award for his novelette, ADaddy=s World,@ and in 2005 another Nebula for “The Green Leopard Plague.” Walter's subject matter has an unusually wide range, and include the glittering surfaces of Hardwired, the opulent tapestries of Aristoi, the bleak science-tinged roman policier Days of Atonement, and the pensive young Mary Shelley of the novella "Wall, Stone, Craft," which was nominated for a Hugo, Nebula, and a World Fantasy Award. The fantasy Metropolitan, which was nominated for a Nebula Award, begins a sequence continued in a Nebula- and Hugo-nominated second novel, City on Fire. Of these works, Norman Spinrad wrote, "There's a Jules Verne solidity to it, all girders and ductwork and massively clanking machineries, a Victorian feel of iron and stone and steam somehow, beautifully and cunningly rendered... not only a well-realized work but a hopeful landmark of sorts..." Walter has written numerous works of alternate history, featuring Edgar Allan Poe (ANo Spot of Ground@), Mary Shelley (AWall, Stone, Craft@), Elvis Presley (ARed Elvis@), and the Empress Dowager of China (AForeign Devils.@) He has also contributed to the alternate history science fantasy series, Wild Cards. His latest work is The Fourth Wall, the third book in his series of near-future thrillers featuring game designer Dagmar Shaw. Walter=s web page may be found at http://www.walterjonwilliams.net.