The Fallen by T. Jefferson Parker

A police procedural set in San Diego, with an intriguing twist - Robbie Brownlaw, the detective assigned to the murder case has synesthesia, a neurological condition that allows him to see different colors emerge that depict emotions as people talk, a primitive lie detector.  The case involves the death of Garrett Asplundh, an ethics investigator for the police department.  Brownlaw and his partner dredge through the city's corruption and shady dealings, particularly a call girl ring known as the 'Squeaky Cleans', run by a Madame who started out running a house cleaning business.  Plenty of plot twists and red herrings keep things moving.  323 pages.

Cold Pursuit by Jefferson Parker

A gritty mystery set in San Diego has veteran homicide cop Tom McMichael investigating the murder of an 84 year old city patriarch, Pete Braga.  To complicate matters, McMichael's family and the Bragas harbor old family feuds.  Good solid characters, a lively plot, and a solid sense of place make this a first rate mystery.  I will probably try some others by this author.  360 pages