Two dentists are alarmed by the unsafe and fraudulent practices that they say were standard at a pediatric dental chain that provides services in underserved communities. Fearing that it would lead to overtreatment, overbilling and putting children at risk, they decide to take matters into their own hands. Also, a whistleblower takes on a pharmaceutical giant, accusing the company of using illicit bribes, expensive vacations and sumptuous dinners to gain illegal access to patient medical records and coerce doctors to prescribe the company's high-priced meds. (UNRATED)

What could be worse than being diagnosed and treated for cancer? Later finding out that your doctor lied and you never had it to begin with. An office manager at a cancer center blows the whistle on the oncologist running the practice when he discovers the doctor giving chemotherapy to more than 500 patients who do not need it. The scope of what the whistleblower discovered was staggering.

James Holzrichter thought he had landed his dream job working at Northrop, one of the top military contractors in the world. But, once he moved from testing equipment to 'product assurance' ensuring that the company was properly billing the government for parts he began to notice some disturbing trends.

Los Alamos National Laboratory is the birthplace of the atomic bomb and home to some of the country's most dangerous secrets. Following a series of embarrassing security lapses and thefts, former police chiefs Glenn Walp and Steve Doran were brought in to review and bolster security at the facility in 2002. But almost immediately, it was clear that things were far worse than they had thought.

Millions of Americans expect their doctors to have the right information about their care at their fingertips, thanks to electronic medical records. But could faulty digital medical records cost lives? Host Alex Ferrer investigates the case of medical charting software gone wrong and another about spoiled food being fed to Washington, D.C. school kids.

What would you do if you had dedicated your career to protecting those who protect us, only to discover that the company that once saved your life may be putting others at risk? That was the dilemma faced by Aaron Westrick.

Students trust that the schools they give their money to will provide them with a good education and a path to a promising future. But one whistleblower was forced to take a stand when she believed that the for-profit school she was working for was ripping off both students and the government. Host Alex Ferrer investigates the case of Globe University and another about a biofuel company that was running a massive scam against the government.