KO'd in Honolulu

Mystery novel "K.O.'d in Honolulu" stars brassy Honolulu police officer, Katrina Ogden, known at work as K.O. She runs a tight ship in the Records and I.D. department and calls things as she sees them. A series of homicides is somehow connected to K.O. who is oblivious because the whole police department is moving from its old digs in the Sears department store to a gorgeous state-of-the-art facility downtown. She is in charge of relocating the whole Records and I.D department, so she fails to notice the possible significance of some bizarre emails she receives. In a police department of more than 1000 officers and civilian employees, it's easy to see how K.O. might miss this connection, until she realizes her cyber stalker's idea of "a gift" is a corpse. Her hacker knows a lot about her, and can access the sophisticated computer system with ridiculous ease. Is it her cop ex-boyfriend, a disgruntled employee, another police officer... ?