"Nepcote does not seem to have taken anything away with him," remarked Caldew, looking into the bedroom. "The wardrobe is full of his uniforms, but the bed has not been occupied."

"Here is the proof that he has fled," said Colwyn, flinging back the lid of a desk which stood in the sitting-room. It was filled to the brim with a mass of torn papers.

"Anything compromising?" asked Caldew, eagerly approaching to look at the litter.

"No; only bills and invitations. Any dangerous letters have been burnt there." He pointed to the grate, which was heaped with blackened fragments. "He's made a good job of it too," he added, as he went to the fireplace and bent over it. "There's not the slightest chance of deciphering a line. But it would be as well to search his clothes. He may have forgotten some letters in the pockets."

Caldew took the hint, and disappeared into the inner room, leaving Colwyn examining the contents of the grate. He returned in a few minutes to say that he had found nothing in the clothes except a few Treasury notes and some loose silver in a trousers' pocket.

"That looks as if he had bolted in such a hurry that he forgot to take his change with him," said Colwyn. "It is another interesting revelation of his state of mind, because there is very little doubt that he returned to the flat this morning after leaving it last night."

"How do you arrive at that conclusion?"

"By the burnt letters in the grate. They are still warm. He was in such a state of fear that he dared not sleep in the flat last night, but he returned this morning to burn his letters and change into civilian clothes. Then he rushed away again in such a hurry that he forgot his money. There is nothing more to be seen here. We had better make a few inquiries of the housekeeper as we go downstairs."

They walked out, and Caldew locked the door behind him and placed the key in his pocket. When they reached the entrance hall Colwyn paused outside the door of the recess where the housekeeper lurked, like an octopus in a pool. At Colwyn's knock a white face, topped by a white cap, came into view through the narrow slit in the curtained glass half of the door, and swam towards them in the interior gloom after the manner of the head of a materialized ghost in a spirit medium's parlour. The door opened, and the apparition appeared in the flesh, looking at them with stony eyes. Caldew undertook the conversation:

"Did Captain Nepcote sleep here last night?" he curtly asked.