A Sad Song Singing (Mac #10), by Thomas B. Dewey (epub/Kindle/pdf)

The girl had lost her guitar-playing boyfriend, but he had left her the most deadly legacy of all -- fear. And now it was up to me to protect her from the gun-carrying thugs who were relentlessly tracking her down. Hoodlums, hootenannies, and homicide!

#10 in the Mac detective series!

"Mac is one of our best private eyes." -- San Francisco Chronicle

"Thomas B. Dewey is one of detective fiction's severely underrated writers!" -- Bill Pronzini

"Mac has been called one of the most believable and humane PI's in crime fiction. He is reluctant to use either his gun or his fists, but will do so when the situation demands it, or in self-defense; he doesn't merely solve his clients' cases, but provides moral support and sympathy as well; and perhaps most notable of all, Mac feels, and is not afraid to show itópain, loss, sorrow, loneliness." --thrillingdetective.com