Needless to say Frank did not send Pablo away. He did not tell the boy of the warning found on the door. Instead, he called the Mexican lad and said:
"Pablo, I want you to watch Tracy closely for me. Will you?"
"Señor Frank can be sure I weel," said the boy.
"If possible, I want you to get some of Tracy's handwriting and bring it to me."
"Eet I will do, señor."
"But look out for him. He's dangerous. Don't let him catch you playing the spy."
"I tak' de great care 'bout that."
Before noon the Mexican boy came hurrying to Merry, his big dark eyes glowing. He caught hold of Frank's hand and gave it an excited pressure.
"I haf eet!" he said.
"What is it you have?"