They locked the cabin of the Water Witch, walked into town, and found a taxi. Their shadow did not show up again, and if a new tail had replaced him, the new one was too good to be spotted. However, the boys doubted that they were being followed.

"I just don't get it," Rick said for the twentieth time. "Our friend must have lost his head. Otherwise he'd have waited on shore and continued to follow us when we came out of the water."

"We'll probably never know," Scotty returned. "After all, we'll be gone in the morning."

"I know. But meanwhile, we'd better have eyes in the back of our heads."

The taxi discharged them in front of Alexander's Rest and they climbed out and surveyed the hotel with interest.

Scotty spoke first. "Alexander's Rest? Which Alexander? The Great, or Hamilton? If it was Hamilton, as Dr. Ernst said, he must have built it personally."

It was a two-story frame structure that had definitely seen better days. On closer inspection Rick decided that the second story had been added as an afterthought. It looked like the second layer of a poorly constructed cake.

Inside, however, the hotel proved to be very comfortable. It was cool, and the rooms were large and clean. The boys learned that they had been registered in a twin bedroom on the second floor, while Zircon and Briotti were on the first floor.

The boys found the scientists attired only in shorts, cooling off over long, cold drinks. They accepted glasses of iced ginger ale and told the scientists of their adventure.

"It's amazing." Tony Briotti shook his head. "Do you realize that you two are a phenomenon? I should write you up for one of the scientific journals."