A Love Story Tainted by Secrets On paper, Greg de Villers and Kristin Margrethe Rossum looked like a golden couple at the dawn of the new millennium. Greg, a French-born biotech worker in his mid-twenties, had found professional footing with an up‑and‑coming firm in San Diego. Kristin, also in her mid‑twenties, had graduated summa cum laude from San Diego State University and parlayed that into a coveted job as a toxicologist with the San Diego County medical examiner’s offic