In another moment Adye was leading the way downstairs. They found the front door open and the policemen standing outside staring at empty air. "He's got away, sir," said one.
"We must go to the central station at once," said Adye. "One of you go on down and get a cab to come up and meet us—quickly. And now, Kemp, what else?"
"Dogs," said Kemp. "Get dogs. They don't see him, but they wind him. Get dogs."
"Good," said Adye. "It's not generally known, but the prison officials over at Halstead know a man with bloodhounds. Dogs. What else?"
"Bear in mind," said Kemp, "his food shows. After eating, his food shows until it is assimilated. So that he has to hide after eating. You must keep on beating. Every thicket, every quiet corner. And put all weapons—all implements that might be weapons, away.