Death in Travelers Rest by J.A. Thompson

Middle school English teacher Jonas Turner thought breaking up a school fight would be the most interesting part of his day—but by late afternoon he is the prime suspect of a brutal murder, with a mountain of evidence pointing in his direction. Olivia Selman, the aspiring detective and first officer on the scene, is the only person in the investigation questioning his guilt. It’s up to this teacher and traffic cop to find the truth before Jonas is locked up for good.