<p>Small-time operator Bobby Carnes took a shot at a big score setting up a major drug sale with some high rollers in Marina del Ray. He went in with a few bags of crank-methamphetamine and a .44 and walked out a stone-cold killer: a suitcase full of cash in his hands and four bodies in his wake.</p><p>Now Carnes is up for trial and Los Angeles County District Attorney George Keegan has decided to prosecute the case himself prompted by his own private anguish. It's a move that guarantees him media coverage in a brutal reelection campaign-a strategy that could easily backfire. For Keegan&#8217;s star witness is running scared and if he loses the case a brutal murderer will go free . . . and all of George Keegan&#8217;s dreams will turn to dust.</p>