From 1848 to 1943, San Francisco was home to a shockingly extensive underground slave trade in Asian women, who were exploited as prostitutes and indentured servants. Shining a light on this little-known chapter, Julia Flynn Siler creates us a vivid portrait of Chinatown's Occidental Mission Home, the safe house to which thousands of enslaved women escaped. Run by Dolly Cameron and her courageous group of female Christian abolitionists, it survived earthquakes, fire, bubonic plague, and violent attacks. Saved from servitude, Tien Fuh Wu became Cameron's loyal lieutenant, and together these ladies defied the law to rescue girls from brothels and bring the captors to justice.