In Grand Rapids, Michigan, Dr. Robert Stokes runs a thriving dermatology practice that's making millions. But Dr. Stokes has a dark secret. American Greed profiles a doctor obsessed with the bottom line. And in a second case, Darlene Wooten and Charlene Corley are twin sisters. They're making a fortune in defense contracts. But behind the scenes, things are not as they seem. American Greed profiles a multi-million dollar fraud against the government.