i'm folly bah thibault.he bodies of more than 300 members of a christian doomsday cult have now been unearthed in kenya. they're believed to have starved themselves to death. dozens more are still alive, but refusing to eat. about 5,000 such movements are estimated to exist worldwide. so, why do people join these often secretive societies, and what dangers might they face? we'll put these questions to our guests in just a moment. but first, catherine soy has this update from nairobi, in kenya, on the investigation there. reporter: the story started unfolding when a relative of two children who are at shakahola ranch in malindi at the kenyan coast who are reported missing and the family said that the parents had been starving these children, so they went to report the matter to the police, who went to shakahola, where they arrested paul makenzie, this man who is said to have lured his -- arrested paul mackenzie, this man who is said to have lured his followers to stir to death and then they started investigat