People: Aug. 12, 1966

In 1964, Missionary Dr. Paul Carlson, 36, was held hostage for three months by rebellious Congolese soldiers in Stanleyville. Then, as Belgian paratroopers raced to the rescue, he and 17 other prisoners were gunned down. Carlson and his missionary-nurse wife had a strong belief in the will of God, and to honor her husband's unshakable faith, Lois Carlson, 38, has now returned to the Congo. She will pick a spot for a medical foundation to be built with funds raised by U.S. donations—in memory of Dr. Paul.

There she is, alone in the jungle,...