No Good Deeds
I love the Tess Monaghan series by Laura Lippman. By now Tess has been a PI for so long, that she no longer misses her old job as a newspaper reporter. However, she does work closely with reporters. At the beginning of No Good Deeds, she's a guest speaker, conducting a seminar for reporters on how to investigate using PI techniques. When she gets home, she finds that her live-in boyfriend, Crow, has brought home a street kid named Lloyd Jupiter. Tess discovers that Lloyd knows something about the recent murder of a local prosecutor. As things progress, Tess, Lloyd and Crow all wind up on the lam and Tess discovers something unknown about Crow.