Joe Gores: Dead Skip (USA 1992)
From the Publisher:
Ballard had 72 hours to find out who attacked his partner, Bart Heslip. Ballard was up against a dead skip, a blank wall. Then Ballard's boss, Dan Kearny, jumped into the hunt, loving every minute of it -- and hurtling them both toward the pointed barrel of a gun...
Joe Gores: Dead Skip. A DKA File Novel. Mysterious Press, ISBN: 0446403121 (December, 1992), 198 p., $4.99.