“See here, Professor,” he continued, “that fellow wouldn’t dare to send this message if he wasn’t pretty sure of getting off. He’s made all his plans beforehand, but it’s my belief we shall just get our hands upon him, after all. Lenora, you’d better get along round to the hospital. You don’t come in this time. It’s bad enough to have Laura laid up—can’t risk you. There’ll be a little trouble, too, before we’re through, I’m afraid.”

Lenora sighed as she picked up her bag.

“If it weren’t for Laura,” she said, “you’d find it pretty hard to keep me away. I think that if I could see the handcuffs put on that man, it would be the happiest moment of my life.”

“We’ll get him all right,” Quest promised. “Remember me to Laura.”

“And present my compliments, also,” the Professor begged.

Lenora left them. The Professor, his spirits apparently a little improved by the prospect of action, accepted some whisky and a cigar. Presently they heard the automobile stop outside and French appeared.

“Anything doing?” he asked.

Quest showed him the card and the sailing list. The Inspector nodded.

“Say, that fellow’s some sport!” he remarked admiringly. “You wouldn’t believe it just to look at him. That staircase this afternoon, though, kind of teaches one not to trust to appearances. So you think he’s getting a move on him, Mr. Quest?”

“I think he had a truck waiting for him at the corner of Gayson Avenue,” Quest replied. “It was the machine my men went after. The men looked like river thugs, although I shouldn’t have thought of it if the Professor hadn’t used the word ‘river pirates.’ It’s quite clear that they took Craig down to the river. There’s only one likely ship sailing to-night and that’s the Durham. It’s my belief Craig’s on her.”