“I’m game,” he said, “but I’m not in this for the profits.” Now he was once committed to it, his spirits began to rise. “What about the danger?” he asked.

“There may be none at all,” the other admitted. “If there is it may be slight. If by any chance it is known to certain crooks that I have it with me there may be an attempt to get it. Naturally they won’t ask me pleasantly to hand it over, they’ll take it by force. That’s one danger. Then I may be trailed by the customs people, who could be warned through secret channels that I have it and am purposing to smuggle it in.”

“But what can I do?” Monty asked. He was anxious to help but saw little opportunity.

“You can tell me if any people follow me persistently while we’re together in Paris or whether the same man happens to sit next to me at cafés or any shows we take in.” He paused a moment, “By Jove, Monty, this means I shall have to book a passage on the Mauretania!”

“That’s the best part of it,” Monty cried.

“But Mrs. Harrington,” Denby said. “She might not like it.”

“Alice can’t choose a passenger list,” Monty exclaimed; “and she’ll be glad to have any old friend of mine.”

“That’s a thing I want to warn you of,” the other man said. “I don’t want you to give away too many particulars about me. Don’t persist in that fable about my saving your life. Know me just enough to vouch to her that I’m house-broken but don’t get to the point where we have to discuss common friends. I have my reasons, Monty, which I’ll explain later on. I don’t court publicity this trip and I don’t want any reporter to jump aboard at Quarantine and get interested in me.”

“I see,” cried the sapient Monty and felt he was plunging at last into dark doings and mysterious depths. “But how am I to warn you if you’re followed? I shall be with you and we ought not to let on that we know.” He felt in that moment the hours he had spent with detective novels had been time well spent.

“We must devise something,” Denby agreed, “and something simple.” He meditated for a moment. “Here’s an idea. If you should think I’m being followed or you want me to understand that something unusual is up, just say without any excitement, ‘Will you have a cigarette, Dick?’”