Elizabeth Bigley, better known as Cassie Chadwick, convinced the American banking establishment that she was Andrew Carnegie's secret illegitimate daughter, borrowing sums worth tens of millions today.

This episode traces her evolution from a rural Canadian forger to the Queen of Ohio, exploiting Gilded Age greed and Victorian taboos until her scheme collapsed and ruined a bank.

• Early forgeries and an insanity defense exploiting gender stereotypes
• Reinventing herself as the clairvoyant Madame Lydia DeVere
• The staged dropped two million dollar Carnegie promissory note
• Running a bank-to-bank scheme that funded lavish spending
• The 1904 lawsuit and Oberlin bank collapse that exposed her