Esteemed television journalist Arthur Kent hosts this original series for the History Channel, exploring some of history's enduring enigmas. Lizzie Borden, who is synonymous with one of the most notorious murders of all time, grew up in a well-to-do family in Massachusetts. Though her relationship with her father was strained, and she disapproved of his second marriage, such factors could not account for the brutal manner in which Andrew Borden and his wife, Abby, were slain. Whether or not Lizzie actually committed the murders has remained an incomprehensible unknown, and this episode explores the arguments both for and against Lizzie's innocence. Including reenactments in the actual Borden home, the episode taps the theories and ideas of many prominent thinkers and historians to attempt to come up with, if not an answer, at least a clear understanding of all facets of the mystery.