When her world came tumbling down, Ruth Madoff was taken completely by surprise.
In fact, after her husband, Bernie, revealed that his financial empire had been built on an elaborate fraud, she looked him in the eye, and asked: "What's a Ponzi scheme?"
Claiming that she had "no idea" of the US$60 billion ($75 billion) scam, Madoff said that she nonetheless blames herself for not seeing through the elaborate lies of the man with whom she shared half a century.
"I can't explain it. I mean, I trusted him," she said, in her first interviews since the spectacular collapse of the family investment house just before Christmas 2008.
"Why would it never occur to me that it wasn't legal? There was nothing that would ever make me suspect."