The Devil Close Behind — Janet Dawson

Private investigator Jeri Howard is on vacation in New Orleans when a friend asks a favor: her sister Laurette has disappeared with a boyfriend, and Jeri's trip turns into a case. Slade, a mercurial musician, tends to strike out when thwarted, sometimes leading to deadly consequences. Jeri's investigation takes her from French Quarter clubs to workaday NOLA, then back to California, into jeopardy―and an explosive conclusion.