Whistleblower begins its second season investigating the real-life David vs. Goliath stories of heroic people who put everything on the line to stop illegal and often dangerous wrongdoing when major corporations or individuals rip off the government and U.S. taxpayers. The cases examined this season represent potential fraud totaling more than $2 billion. The series takes viewers behind the scenes as these unsung heroes step up and risk everything to expose unethical greed and activities as they try to protect those who are most vulnerable to fraudulent scams. Alex Ferrer returns as host.