Hacker — Lee Martin

Hovering perilously near burnout with the demands of police duty and family life - specifically toddler, husband, teenager and a friend comatose from a hit-and-run - Fort Worth detective Deb Ralston now adds a grisly ax murder to her twenty-five-hour days.
A man and his computer are hacked to pieces. Eric Huffman had no enemies, no reason to be so violently murdered. Neither did restaurant owner Helen Thorne, but a day later both she and her computer are victims of the same horrible crime. The evidence is thin, but disturbing...since the pattern seems poised to repeat itself in Deb's own household.