“Yes,” said Kara.

T. X. leant across the desk.

“How did you know?” he snapped.

“Somebody told me, I don't know who it was.”

“That's not true,” replied T. X.; “nobody knows except myself and Mrs. Lexman.”

“But my dear good fellow,” said Kara, pulling on his gloves, “you have already asked me whether I didn't burn the letter.”

“I said envelope,” said T. X., with a little laugh.

“And you were going to say something about the other clue?”

“The other is the revolver,” said T. X.

“Mr. Lexman's revolver!” drawled the Greek.