Tax Break by Jay Williams

In TAX BREAK, Lt. Neil Kenny, a career climbing, idealistic cop attempts to capture the man who planted a bomb in the IRS facility in Austin. That man is Jim Greenwald, a former Green Beret, who executed a few clandestine missions for the CIA after Vietnam, and who now only wants to devote his life to running his bar, The Library. Greenwalds plans go horribly awry when the IRS confiscates his bar for unpaid taxes.