"You think he has been dead nearly twenty-four hours, Petrie?"
"Roughly, twenty-four hours," I replied.
"Then, we know that he was on the track of the Fu-Manchu group, that he followed up some clew which led him to the neighborhood of old Ratcliff Highway, and that he died the same night. You are sure that is where he was going?"
"Yes," said Weymouth; "He was jealous of giving anything away, poor chap; it meant a big lift for him if he pulled the case off. But he gave me to understand that he expected to spend last night in that district. He left the Yard about eight, as I've said, to go to his rooms, and dress for the job."
"Did he keep any record of his cases?"
"Of course! He was most particular. Cadby was a man with ambitions, sir! You'll want to see his book. Wait while I get his address; it's somewhere in Brixton."
He went to the telephone, and Inspector Ryman covered up the dead man's face.
Nayland Smith was palpably excited.
"He almost succeeded where we have failed, Petrie," he said. "There is no doubt in my mind that he was hot on the track of Fu-Manchu! Poor Mason had probably blundered on the scent, too, and he met with a similar fate. Without other evidence, the fact that they both died in the same way as the dacoit would be conclusive, for we know that Fu-Manchu killed the dacoit!"
"What is the meaning of the mutilated hands, Smith?"