PIMCO founder and legendary investor Bill Gross was known as the "Bond King." People all over the finance world listened to his market calls. He helped change a sleepy bond market into the highly competitive and profitable world we know today. His story is also the story of how American financial markets work, how people game them, and what happens when they implode. NPR's Mary Childs wrote about Gross in her book, The Bond King: How One Man Made A Market, Built An Empire And Lost It All. She reported an episode about Gross for NPR's Planet Money.In participating regions, you'll also hear a local news segment to help you make sense of what's going on in your community.Email us at considerthis@npr.org.