The Widower's Two-step (Tres Navarre Series #2)

From the #1 New York Times bestselling author of the Percy Jackson and the Olympians series
 
Tres Navarre has just hours of apprenticeship time to serve before he can go for his P.I. license. Staking out a musician suspected of stealing a demo tape should be a piece of pan dulce. But his attention wanders just long enough for fiddle player Julie Kearnes to be gunned down before his eyes. He should just back away and let the cops investigate, but backing away has n…