"Well?" Arnold interposed, breathlessly.
Isaac shook his head.
"Never mind!"
"But I do mind," Arnold insisted. "I want to know about that night. Was it in search of us—"
Isaac held out his skinny hand. There was a dangerous glitter in his eyes.
"It is enough," he snarled. "I have no more to say about what is past. Send me Sabatini and he shall hear news from me."
Arnold retreated slowly towards the threshold.
"If you will take the advice of a sane man," he said, "you will throw that thing away and escape. If I can help—"
Isaac was already creeping to his hiding-place. He turned around with a contemptuous gesture.
"There is no escape for me," he declared. "Every day the police draw their circle closer. So much the better! When they come, they will find me prepared! If you are still here in sixty seconds," he added, "I will treat you as I shall treat them."