City of Vice - Carter Thompson Mysteries, #3

Carter 'Cash' Thompson is no longer a cop or a private investigator. After his partner's death, Carter is drinking constantly, and in debt for gambling. Now a night manager in a seedy motel in Bondi, Carter is friends with a drug dealer and protection man, Gerry Novak. Things change when a young girl, Andrea Huston, is found murdered in her apartment. Cash feels guilty for not helping her sister Sally when she asked him.
With the help of his cop friend, James Roach, he searches for clues that could lead him to the killer. A heated race against time ensues, and in this game, only one man can win.