The Gods of Guilt by Michael Connelly

In this fifth book of the Mickey Haller series, Mickey is hired by Andre La Cosse, who's been arrested for murdering prostitute Gloria Dayton. Mickey knew Gloria years ago and gave her money to start a new life in Hawaii.  He's disappointed that Gloria returned to Los Angeles and that her job seems related to her death. But as Mickey and his team delve into Gloria's life, they discover that her murder is probably connected to why she disappeared from L.A. originally. Preparing for trial, Mickey risks both his life and those close to him to prove that Andre is innocent.  In Connelly's trademark style, he writes a fast-paced novel with a intriguing story and likable characters.