1The Angel of Death In his first television appearance, "Angel of Death" serial killer nurse Charles Cullen tells Steve Kroft he is sorry for murdering scores of patients, but he isn't sure he would have stopped if he had not been caught. Cullen is the first serial killer to appear on 60 Minutes in its 45 years on the air and though he says he murdered between 30 and 40 victims on his confession tape -- portions of which will be broadcast for the first time -- some suspect he killed many more.
2Frozen Waterfalls In the bitter temperatures of winter, a growing number of adventurous and audacious climbers around the world are now scaling frozen waterfalls. As they cling to brittle ice, their every move is heart-stopping - one false step and they can fall to their death. Even for the most experienced it is a serious test of their physical and mental skills.