San Francisco...504 PM, October 17th, 1989 The Earth shook violently, and 274 people lost their lives in terror. However, of that toll, two succumbed instead to the cold hand of murder. Private investigators Brandon Harrison and Tina Wolffe are hired by Katie Denton, the only witness to the hideous act. Their investigation leads them through a shattered city, and as aftershocks rumble below, a vicious killer stalks their client.