AFTER ALL THESE YEARS

Again, Isaacs's (Magic Hour, etc.) formulaic plot device is almost beside the point as she tickles readers' funny bones in her latest Long Island melodrama-cum-satire—this time featuring a middle-aged millionairess who's accused of her estranged husband's murder. ``After nearly a quarter of a century of marriage, Richie Meyers, my husband, told me to call him Rick,'' reports Rosie Meyers, a high-school English teacher whose husband struck it rich years before by cofounding a computer-research firm and thereby launching the two of them into the stratosphere of Long Island monied society. Had she not been so cheerfully enmeshed in her resolutely middle-class teaching career, Rosie adds, she might have seen the writing on the wall: Richie was in the midst of a midlife crisis that featured an affair with Data Associates's very young and very blond vice-president, Jessica Stevenson. Weeping (unrepentantly), Richie leaves Rosie shortly after their silver wedding anniversary, and Rosie suffers one long, miserable, solitary summer—until one night, woken from a Xanax-induced slumber, she stumbles across Richie on her kitchen floor, stabbed to death with one of her own carving knives. The police assume the spurned wife is the culprit, and Rosie is forced to flee to Manhattan to do her own investigating and prove them wrong. Along the way she learns some hard truths about her husband's secret life, and though the true killer's identity becomes clear far too early, Isaacs's ability to keep readers laughing through Rosie's darkest moments should prove cathartic for many among her loyal readers. Broad humor, ebulliently proffered. (First printing of 150,000; Literary Guild Dual Selection for September)