"No," she replied listlessly. "I'm getting worn-out over this trouble. It's no good my telling you anything, because you don't believe me. What is the matter now? Have you got further proof of my guilt?"
"I don't know," said Naball, coolly producing the five-pound note; "unless you call this proof."
"A five-pound note," she said contemptuously. "Well?"
"It is a five-pound note," explained Naball smoothly; "but not an ordinary one--in fact, it is one of the notes stolen from Lazarus's safe."
"Oh, how do you know that? By a very curious thing. One of the notes placed in the safe on the night of the murder was endorsed by the office-boy with the words 'Back Flat-Iron,' and strange to say the endorsed note has turned up."
"And that is it?"
"Exactly. Now, do you understand?"
Kitty shrugged her shoulders.
"I understand that you have secured an excellent piece of evidence, nothing more. Where did you get the note?"
"From Miss Rainsford."