Suggestion from Barry
I would like to suggest A Drink Before the War by American crime writer Dennis Lehane. Although i've not read this or any of Lehane's other books I have been meaning to give him a go. He wrote a couple of really good episodes of 'The Wire' and two of his other novels have been adapted into interesting films - 'Mystic River' and 'Gone Baby Gone'. 'A Drink Before the War' is the first novel in a series of five, so far, featuring private detectives Patrick Kenzie and Angela Gennaro.