In 16th-century Portugal, even Do a Gracia's Jewish name was a secret. But she and her merchant husband helped other secret Jews, by persuading the king to protect them during the Inquisition. When her husband died, many said no woman would be able to run their international business, but Do a Gracia did. Escaping Portugal, she helped other Jews do the same, smuggling them out of the country on her spice ships in the night. Only in Turkey was she...