For 40 years now, the 1985 World Series between the Kansas City Royals and St. Louis Cardinals has been largely overlooked, save for the enduring notoriety of umpire Don Denkinger's infamous missed call in Game 6 that helped galvanize a walk-off Royals victory that forced a Game 7, in which the Royals won in a blowout. Seizing upon the imagery of the famed Interstate Highway 70 that connects Kansas City and St. Louis, Interstate '85 goes beyond "The Call" and recasts the 1985 Series as a unique and deeply compelling chapter in baseball history. In this blend of baseball and cultural history, Garvey defines the "I-70 Showdown Series" not only by the literal highway that links the two teams' home cities but the individual and collective roads travelled by the players and others who took part in the event, both before the Series began and well after the last cheers faded.

In addition to gripping human stories and vivid descriptions of on-field action long overshadowed by Denkinger's monumental blunder, Garvey's work captures the provincial spectacle of the "Show-Me Series" throughout the state of Missouri. Featuring 27 new interviews conducted by the author, including with George Brett, Ozzie Smith, Don Denkinger, Bud Black, Andy Van Slyke, Ricky Horton, and Mark Gubicza, Interstate '85 is baseball history writing at its deepest and most captivating.