Helen O'Donnell
Helen O'Donnell is the daughter of John F. Kennedy's top-gun political aide, Kenneth P. O'Donnell. Ms. O'Donnell is the author of "A Common Good: The Friendship of Robert F. Kennedy and Kenneth P. O'Donnell." She also worked with Chris Matthews of MSNBC's Hardball on his 2012 book "Jack Kennedy: Elusive Hero."