A powerful vibration, a deafening noise and a swell of thick dust brought residents of McKinney pouring into the public square on the afternoon of January 23, 1913. What they saw was horrifying--an entire building had collapsed, demolishing two popular retailers, the Cheeves Mississippi Store and Tingle Implement Store. Their contents, including many shoppers and clerks, spilled out into the streets, where layer upon layer of debris settled into a massive, ragged pile. In spite of a herculean rescue effort, eight people perished. Carol Wilson sifts through the disaster and its aftermath, dredging up some troubling facts about how the tragedy might have been prevented.