Federal investigators say Chinese spies spent years to obtain secrets from the inner confines of the Federal Reserve. It's a tale of sex, money, deceit and betrayal that put some of the country's vital economic and financial secrets at risk. With exclusive access to new documents, audio, photos and text messages, CNBC's Eamon Javers uncovers the story of former Fed economist John Rogers' and the Chinese spy who would spent years trying to uncover some of the Fed's most tightly held secrets.