KO'd in Honolulu - Katrina Odgen Mysteries, #1

Heroes, Homicide, and Honolulu... Brassy Honolulu police officer, Katrina (K. O.) Ogden, runs a tight ship, calling things as she sees them while serving and protecting the people of Hawaii. But, after K. O. becomes connected to a series of recent homicides, the whole department could be in danger. When K. O. realizes the killer is right on her heels, she abandons her investigation and goes into hiding.
With a murderer who knows too much about her--all the while baiting K. O. with gifts and clues to help along her case--and can access their new state-of-the-art computer system with ease, it's time for K. O. to do what she does best: Knock out the criminal before he strikes again.