I think it's safe to say that in most people's mind, fasting, long services, and certainly Kol Nidrei are generally connected with what people think about Yom Kippur. But the actual history of the Kol Nidre is often a mystery to many Jews. It's often assumed to be linked to forced conversions. And there may in fact be some truth to that. But the sources are not altogether clear. This short episode explores some key concepts about it.