I’m still reading through the Dresden Files series. Although these are not traditional mysteries, they are a lot of fun. I'm reading the 11th in the series, Turn Coat. In this one, Chicago wizard detective Harry Dresden finds Morgan, a fellow wizard, asking for his help. There has been a great deal of conflict between these two even after Harry was asked to join the magic-governing White Council.
One of the White Council leaders was murdered and Morgan has been framed for it. If Morgan didn’t do it, then another respected wizard is responsible and Harry has to search for the traitor. With the help of his vampire and werewolf allies and with his sarcastic wit, Harry is up for the job.