"Good," said Grant. "You and I will go up. Got a shooter in your pocket, in case? All right, come on."

They had no latchkey, and there was apparently no bell for the third floor. They had to ring several times before the inhabitants of the ground floor came grumbling to their rescue and admitted them. As they ascended the increasingly shabby stairs in the last of the daylight Grant's spirits rose, as they always did at the point of action. There would be no more pottering round. He was about to come face to face with the Levantine, the man he had seen in the Strand, the man who had stuck Sorrell in the back. He knocked abruptly at the door in the shadows. The room beyond sounded hollow and empty; there was no answer. Again Grant knocked, with no result.

"You might as well open it, Lamont. We're police officers, and if you don't open it we'll have to burst it."

Still a complete silence. "You're sure he's here?" Grant asked Williams.

"Well, he was here yesterday, sir, and no one's seen him since. The house has been under observation since three this afternoon."

"We'll burst the lock, then," Grant said, "and don't forget to stand back when the door goes in." With their combined weight they attacked the door, which gave up the unequal struggle with a groaning crash, and Grant, with his right hand in his pocket, walked into the room.

One glance round him told him the truth, and he suddenly knew that ever since he had arrived on the landing outside he had had a conviction that the rooms were empty. "The bird's flown, Williams. We've missed him."

Williams was standing in the middle of the floor, with the expression of a child from whom a sweet has been taken. He swallowed painfully, and Grant, even in the middle of his own disappointment, found time to be sorry for him. It wasn't Williams' fault. He had been a little too sure, but he had done well to locate the man so quickly.

"Well, he went in a hurry, sir," said Williams, as if that fact were a palliative to his own hurt pride and disappointment. And Certainly there was every evidence of haste. Food was left on the table, drawers were half open and obviously ransacked, clothing had been left behind, and many personal possessions. It was not a methodical getaway, it was a flight.

"We'll go through what he has left behind," Grant said. "I'll test for fingerprints before we have to light the lights. There seems to be nothing but the lamp for illumination." He went round the two rooms with his light powder, but there were few surfaces in the flat on which a print was likely to show clear and unmistakable, and these were so patterned over with prints as to be unproductive. But fairly high up on the varnished wood of the door, where a person's left hand would rest as his right took a coat from the hooks nailed there, were two good prints. A little consoled, Grant lit the lamp and went through the things Lamont had left behind. An exclamation from Williams in the bedroom took him there. Williams was holding a wad of Bank of England notes.