She broke into a ripple of laughter and walked to the fireplace. There was a calcined mass which she broke up with the poker. “Shall I give this back?” she asked. So roguish and exquisite did she look as she stood before us with a challenging smile that I felt of all Holmes’s criminals this was the one whom he would find it hardest to face. However, he was immune from sentiment.

“That seals your fate,” he said coldly. “You are very prompt in your actions, madame, but you have overdone it on this occasion.”

She threw the poker down with a clatter.

“How hard you are!” she cried. “May I tell you the whole story?”

“I fancy I could tell it to you.”