Description:

This book provides readers with a sweeping overview of the captivating and oft-unsettling genre of alternate history. Dubbed the "Master of Alternate History" by Publisher's Weekly, Harry Turtledove has joined with veteran anthologist Martin H. Greenberg to compile an anthology of multiple worlds, amazing events, time-travel and human drama that vividly brings to life the mutable nature of our collective past, present and future. Turtledove provides an introduction to each story, including biographical information on the authors. In his own contribution to the anthology, Turtledove delivers a dramatic account of competition between a powerful Islamic state and a weakened Church of Rome, a tale that epitomizes the exciting question essential to all alternate history stories: What if...?