John Dickerson interviews former Rep. Liz Cheney (R-Wyoming) (book, "Oath of Honor: A Memoir and a Warning"); actress Taraji P. Henson (movie, "The Color Purple"); Rush lead singer Geddy Lee; Susan Spencer on how stopping the shame surrounding mental health might be a way to prevent deaths by suicide; the cast of "Archie"; a ride on the Alaska Railroad; Ted Koppel looks back at the life of Henry Kissinger