At the start of the 20th century missionaries were still risking life and limb to take the Christian gospel to territories barely touched by the modern world. By the end of the same century, they had largely become "mission partners", employees of native-run churches. Colin Morris , broadcaster and former missionary, explores the archive of memories of mission fields in Africa, Latin America, the Far East and the South Seas. How far did missionaries suffer from being identified with imperial powers? How did they fare in the post-colonial world? Was providing medicine and education more important than winning converts? Plus glimpses of missionary giants Gladys Aylward , Mother Theresa , Albert Schweitzer and Trevor HuddlestOn. Producer Andrew Green