“THE LETTERS that Havelock showed me,” said d**k, as they were driving back to town, “were, of course, written by himself. I discovered that the day he showed me a message that he said he had received that morning from Cairo. It was written in green ink, and he had two specks of green ink on the tip of his finger. I knew before that that he was deeply involved in this case.”
“How did Cawler know that the big man was his brother?” asked Sneed. “That puzzles me.”
Dick thought the matter over.
“He may have guessed for a long time,” he said. “He’s not a bad fellow, Cawler, and I’m not going to repeat the story he told me about the scientific use of a spanner. At present the ‘locals’ think it was caused by the car in its fall, and I see no reason in the world why I should undeceive them.”
“
