Down by the River Where the Dead Men Go — George P. Pelecanos

"You already been a punk. Least you can do is go out like a man."

Then a dull popping sound and a quiet splash. In his third appearance in George Pelecanos's acclaimed series, Nick Stefanos has been spending too much time with bad women and bad booze. Which is why he wakes up one blurry morning on the banks of the Anacostia River, hungover and miserable -- and now a witness to a murder. With the help of a partner as straight-arrow as Nick is bent, Nick decides to track down the killer, an investigation that leads them through the roughest part of the nation's capital, and into the blackest parts of the human soul.