"What's the matter with him, Doctor?" he asked, looking up at Thorndyke. "Is it apoplexy? Or is it a heart attack, think you?"

Thorndyke shook his head, though he stooped and put his fingers on the unconscious man's wrist. "Prussic acid or potassium cyanide is what the appearances suggest," he replied.

"But can't you do anything?" demanded the inspector.

Thorndyke dropped the arm, which fell limply to the floor.

"You can't do much for a dead man," he said.

"Dead! Then he has slipped through our fingers after all!"

"He has anticipated the sentence. That is all." Thorndyke spoke in an even, impassive tone which struck me as rather strange, considering the suddenness of the tragedy, as did also the complete absence of surprise in his manner. He seemed to treat the occurrence as a perfectly natural one.

Not so Inspector Badger; who rose to his feet and stood with his hands thrust into his pockets scowling sullenly down at the dead lawyer.

"I was an infernal fool to agree to his blasted conditions," he growled savagely.

"Nonsense," said Thorndyke. "If you had broken in, you would have found a dead man. As it was you found a live man and obtained an important statement. You acted quite properly."