By the former New Orleans bullet-tracing DA, some election-year confetti in the form of a scabrous novel of this assassination/kill crazy country. For Garrison it's all an ""invisible fifth estate"" consisting of agency against agency, assault teams and termination techniques. A good man is hard to find but then there's Colin McFerrin, determined to protect the president, who on a lone shooting in a woods, silences three lives but exposes his own. From then on it's chain-programmed death escalating from one general to another to the president's professor-advisor--and be sure to watch out for a little grey-haired hit lady, or cooler, who is most unexpected. Garrison's vicious novel is beefed up with lots of sex and body language (""I think it's going to fester until there's gangrene up our bungs and a chink's fart will smell good alongside the rot we'll all be shitting""), and some ballistics and computer talk. Couth it's not; think in terms of Robin Moore rather than Frederick Forsyth and remember the mind that's blown may be your own. But there will be lots of advertising and TV appearances of the hard-nosed DA; consider yourselves ""informated.