In April 1984, Foothill High freshman Tina Faelz took a shortcut on her walk home. About an hour later, she was found in a ditch, brutally stabbed to death. The murder shook the quiet East Bay suburb of Pleasanton and left investigators baffled. With no witnesses or leads, the case went cold and remained so for nearly thirty years. In 2011, the investigation finally got a break. Improved forensics recovered DNA from a drop of blood found at the scene matching Tina's classmate, Steven Carlson. Through dusty police files, personal interviews, letters and firsthand accounts, journalist Joshua...