McKusick didn’t give Hsu instructions for explaining the research to the Lackses. All she knew was that Victor McKusick had told her to call the family. “He was like a god,” Hsu told me years later. “He was a famous, famous man, he trained most of the other famous medical geneticists in the world. When Dr. McKusick said, ‘You go back to Baltimore, get this blood drawn,’ I did it.”