"What I'm going to tell you now is top secret," said Feynman. "The fate of your country, and maybe more than the fate of your country, depend on you keeping your mouth completely shut. Do we understand each other?"

     "I can keep my yap as completely shut as the next guy."

     "There's something that we call the Maze..." Feynman began.

     An hour later my mind was still reeling. What do you do when someone reveals the unbelievable? The whole thing was unbelievable, every part of it. I went over it again and again. I'd understood almost everything the Physicist had told me. Accepting it was the hard part.

     The Maze was a secret pathway through Time and Space, a time machine and teleportation unit rolled into one. It had hidden entrances called portals, gateways from one Space and Time to some other Space and Time. It was more complex than that, according to the Doc, but that was the basic premise. There was a portal near the Thousand Islands on the Canadian side, and another portal right here in Chautauqua county. Both of the portals were underwater, and they appeared to be one-way portals. No volunteer had ever returned from either one.

     But the Maze had rules of its own, in a strange sort of way it had its own scale of time. Maybe the volunteers would start showing up some day. Or, maybe they had died the instant they had gone through the portal. There was evidence that what was on the other side was a completely aquatic planet, a Death World. But some living things came through the Portals. "You mean aliens!" I had exclaimed.

     "Yes," Feynman had continued. "Dunkirk is on a kind of a trail between the two portals. The Aliens always follow this route. We believe that they come from a planet that is rich in Heavy Water, a key source of Deuterium, vital for our nuclear energy program. The problem is that the Russians know about it, too. Our code name for the Aliens is Crocodiles."