Anybody's Money — Sharon E. McGee

In this third Amelia Leigh mystery, Amelia is getting her life back on track when the arrival of a letter stirs up the past and inexorably involves her in the nefarious dealings of a local insurance agency with dark ties to the prohibition era. Then a budding friendship and the shooting death of a neighbor, with whom she'd had an altercation, once again put her in the sights of Billy Frazier, a police investigator, who is convinced that Amelia is an unrepentant killer.