"Morning Edition" cohost Steve Inskeep""presents a riveting account of a single harrowing day in December 2009 that sheds light on the constant tensions in Karachi, Pakistan--when a bomb blast ripped through a Shia religious procession, followed by the torching of hundreds of businesses in Karachi's commercial district. Through interviews with a broad cross section of Karachi residents, Inskeep peels back the layers of that terrible day. It is the beginning, and a constant touchstone, in a journey across the city's epic history and its troubled present Thrilling and deeply researched, "Instant"" City" tells the story of one of the world's fastest-growing metropolises and the forces competing to shape its future.