By Daneet Steffens
October 08, 1999 at 04:00 AM EDT

Kinsey Millhone, PI, is lookin’ good. She’s added a weights workout to her three-mile morning jog and has found a fashion alternative to her synthetic black dress. She’s also reveling in her single state, wearing gym socks a week at a time and shamelessly chowing down on peanut butter and pickle sandwiches. In “O” is for Outlaw, Kinsey has to revisit — and reopen — a 14-year-old killing involving her little-mentioned first husband, Michael. Kudos to Grafton, who, after 15 novels, has nicely honed Kinsey’s tart sense of humor: This detective’s idea of a vacation is to ”lounge in the sun and read the latest Elmore Leonard novel while sipping on a rum drink with a paper umbrella stuck in a piece of fruit.”