For fans of Julia Buckley and Tess Gerritsen , a debut featuring a killer in plain sight using a microscopic murder weapon, the cutting edge gene-editing technology: CRISPR. Boston geneticist Dr. Saul Kramer is on the cutting edge of genetic disease research. Revered among clients at his IVF clinic, he harbors a dark secret. In addition to helping infertile couples conceive healthy babies, Dr. Kramer is obsessed, for his own dark reasons, with an...