The Lifted and Subsided Rocks of America: With Their Influences on the Oceanic, Atmospheric and Land Currents, and the Distribution of Races (1870)

Sophia Armstrong, a computer teacher at a Texas College, finds her cousin, Randy, is suspected of murder. They grew up as brother and sister. He has disappeared. She needs to find her cousin, prove his innocence and clear his name. She finds the chief investigator, Lt. Stone Hardin, attractive and would like to make him her new friend. However, he ignores her theories and tells her to stay out of police business. This makes her upset. She is not meddling and sets out to prove it. Using determination, her computer skills, and mental prowess, Sophia figures out the true identity of the murderer who has been killing computer teachers across the country. She is playing a dangerous game and no one is listening but the killer. He knows what she has been doing, fears exposure, and decides it is time eliminate her as a threat.