even greater anthropologist, richard leakey said that perhaps no one did more to save lives in east africa>> oh, question. >> what did she do? >> she did medicine on a kind of -- on a massive scale. geometric how she could do this. land five tiechlz mes in a day. all her patients would be waiting at a mission clinic, under a tree. might be as many as 100. warriors, their wives. all had a cough or injury of some sort. she would treat them at an extraordinary fast paced way. she had a real instinct for, for, smelling out disease. and smelling out a problem. and, and coming up with, with a cure. >> what would you say was her greatest legacy in the medical zone? vaccinating the coast of kenya all the way to the somali border. >> when did you start to sense that all was not as the it seems with her? >> well, i was always puzzled. why was it every time i asked her about her past, she was very happy to tell me about her childhood in france, switzerland. happy to talk about everything. some how the years, 1939 to about 1948, off-limits. and i pressed her. i did know a few things. i knew that she h