In 1981 the sudden collapse of two skywalks in Kansas City's Hyatt hotel killed 114 people and injured another 200. There never was a public trial, nor a full airing of everything that went wrong. Richard A. Serrano shared a Pulitzer Prize for his coverage of the disaster at the time; now he returns to the tragedy to learn all that went wrong, how it could have been avoided, and what lasting effects persist today--for engineering and the legal...