testify in the convicts’ appeal. Facing off against Edwin Grace, Capone’s attorney, Elizebeth grew impatient with his attacks on the validity of her science and told the judge she could settle the issue quickly if she had a blackboard. A bailiff found a blackboard in storage and wheeled it into the court. Elizebeth stood with a piece of chalk and diagrammed the rum ring’s codes on the board until the jurors were nodding their heads and Grace was muttering that this was highly irregular. “CLASS IN CRYPTOLOGY,” one newspaper blared the next day. The headline made her queasy. She had
