What really happens behind the padlocked doors of this windowless building, [the home] of Skull and Bones, Yale's oldest secret society? Its members include some of America's most powerful and privileged elite all sworn to secrecy. [CAMPBELL] BROWN: Alexandra Robbins broke through the wall of silence to write Secrets of the Tomb based on clandestine interviews with dozens of bonesmen. Only 15 [Yale students] get picked each year. The society includes at least three U.S. presidents, Supreme Court justices, and too many senators and CEOs to name. In 2004, Bush versus Kerry was the first all-bonesmen presidential election. ALEXANDRA ROBBINS: Skull and Bones' only purpose is to get its members into positions of prominence around the world so that they can elevate other members to similar positions. One of the first activities they participate in is called connubial bliss, where ... each member must spend an evening standing in front of the other 14 bonesmen and recount his or her entire sexual and romantic history. BROWN: According to one ... story, Prescott Bush, George W. Bush's grandfather, was part of a group that broke into the Oklahoma burial place of the Apache chief Geronimo and made off with his skull. Geronimo's grave was disturbed back in 1918, there are photos of skulls inside the "Skull and Bones" tomb. They have their own private retreat. Deer Island off the coast of New York. And a world of ready investors and political contacts in the highest echelons of American society. What has kept the secret society alive for all these years? Good old fashioned networking for the super elite.