It's estimated that about six million people in the U. S. have the dreaded form of dementia known as Alzheimer's disease. The search for a cure has fallen frustratingly short. Now, one pharmaceutical company says a cure, at least for early Alzheimer's, is on the horizon - just waiting for FDA approval. But it's not so simple. Today's cover story: questions about conflicts of interest, money, and why critics say it’s a Mind Game.