Since childhood, Jennifer Doudna was intent on discovering the code of life. She went on to co-develop CRISPR and now wrestles with the implications of editing DNA—including not only the ability to prevent depression but the ability to enhance a baby's IQ. Author James Watson, a co-discoverer of DNA, writes about Doudna's remarkable career, including her winning the Nobel Prize in 2020 with her collaborator Emmanuelle Charpentier. An "enthralling detective story" (-Oprah Daily) that dives into the world of medical miracles and moral questions.