Larry King returns to CNN with an emotional look at how people cope with Alzheimer's disease. Don't miss "Unthinkable: The Alzheimer's Epidemic" Sunday night, May 1st at 8 ET on CNN. For more details visit http://on.cnn.com/jr6TOk

Larry King returns to CNN with an emotional look at how people cope with Alzheimer's disease. Don't miss "Unthinkable: The Alzheimer's Epidemic" Sunday night, May 1st at 8 ET on CNN. For more details visit http://on.cnn.com/jr6TOk