"Suddenly our wonderful society is invaded by people from centuries past, people who are seeking escape from the great atomic wars that are decimating mankind, people who, in a rapidly advancing technology, have achieved a break-through in the deminsion we call time. Perhaps they com in hundreds and thousands, and perhaps they are aggressive and belligerent, and perhaps our own society is too small to be able to absorb or control them effectively. What to do, Russ? How to deal with these illegal immigrants from the timelines, that is the problem."