Patrick Kenzie and Angela Gennaro are tough private investigators who know the blue-collar neighbourhoods and ghettos of Boston's Dorchester section 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 Statehouse documents. But finding Jenna proves easy compared to staying alive.