Widowed book editor Carla Baron is living on Manhattan's Upper East Side--with her six-year-old Melissa and her heavy guilt over the drowning death of shiftless husband Neil four years ago. So Carla is predictably unhinged by a series of middle-of-the-night phone calls in Neil's voice. Her affair with suitor Mike Trenton comes to a dead halt; and Carla flees to her Arizona hometown for a family reunion and for a sleuthing visit to her mother-in-law's estate--with clues that lead her to find Neil alive in a small-town Mexico cantina! However, though Neil comes clean about his drowning escape, he denies any knowledge whatsoever of those phone calls. So it's back to Arizona, where Carla ultimately finds her tormentor and is rescued by Mike from an early demise. Humorless, paper-thin characters in a fairly intriguing, competently narrated plot: more of the mystery/romance usual from veteran Johnston.