“That man who was talking to me!” Dan exclaimed. “Did you notice him?”

Neither of the policemen had seen Eddie.

“He threatened me,” Dan revealed. “Warned me not to identify someone in the line-up. And he had a revolver.”

Now very much interested, the policemen went outside the building to look up and down the street. Paper Bag Eddie was nowhere to be seen.

“Probably hailed a taxi and made a quick getaway,” one of the officers said. “Listen, Dan. Don’t pay any attention to what he told you. It was all bluff. You go in there and identify your man if you can.”

“I intend to,” Dan announced, his face grim. “He can’t scare me.”

“Good!” the policeman approved. “Now follow me.”

Dan was led through a series of corridors and up an elevator to an inner room. There he was introduced to Detective Jim Blackwell and Sergeant Amos Davis.

“Now in a moment, several men will walk across a lighted stage in front of you,” Sergeant Davis explained. “You’ll be behind this screen, protected from their view. Don’t say anything, but look closely at each man. If you recognize any of them, tell me later. Got it?”

Dan nodded. His heart pounded with excitement. He had made up his mind to identify the motorboat operator if he possibly could.