Drink Before the War - Dennis Lehane

Kenzie and Gennaro are private investigators in the blue-collar neighborhoods and ghettos of South Boston-they know it as only natives can. Working out of an old church belfry, Kenzie and Gennaro take on a seemingly simple assignment for a prominent politician: to uncover the whereabouts of Jenna Angeline, a black cleaning woman who has allegedly stolen
confidential state documents.
Finding Jenna, however, is easy compared to staying alive once they've got her. The investigation escalates, implicating members of Jenna's family and rival gang leaders while
uncovering extortion, assassination, and child prostitution extending from bombed-out ghetto streets to the highest levels of government.
A Drink Before the War, the first in Lehane's acclaimed series with Boston detectives Patrick Kenzie and Angie Gennaro, is a remarkable debut that is at once a pulsating crime thriller and a mirror of our world, one in which the worst human horrors are found closest to home, and the most vicious obscenities are committed in the name of love.