The Betrayal – 60 MINUTES reveals new findings from an unprecedented investigation into the seven-decade-old mystery of how the Nazis discovered Anne Frank, her family, and four others hiding in an Amsterdam annex. Otto Frank, Anne's father, the only family member to survive the Holocaust, returned from Auschwitz with a question: Who betrayed their hiding place to the Nazis? Two inquiries by the Dutch police and decades of research have resulted in theories but no definitive answers. In 2016 a team of investigators and researchers, led by former FBI agent Vince Pankoke, launched a new effort to crack this cold case using modern investigative techniques and technology. Jon Wertheim speaks with Pankoke and others on the team about their groundbreaking approach to this stubborn question, revealing their prime suspect. This is a two-part report. Chris Stapleton – His contemporaries will tell you he's among the best country music has these days. Kentucky-bred Chris Stapleton is a triple-threat: a powerfully gifted singer, prolific songwriter, and skilled guitar player. His talents have connected with music fans across generations and genres. Sharyn Alfonsi traveled to Nashville, where Stapleton performed at the Bridgestone Arena and showed 60 MINUTES around town and inside his rehearsal space filled with artifacts and awards. Alfonsi also interviewed Stapleton and his wife and bandmate, Morgane, about their life together and making country music.