Professor Tarantoga saves human civilization! After using his chronopad to investigate the leading scientists and artists in history, Tarantoga concludes that without exception they are lazy drunkards. So naturally, he sends smart young people into various eras to invent differential calculus, to paint the Mona Lisa, etc.—all while a pair of police inspectors have their eye on him.

In early 1960, Perry Mason author Earl (not Erle) Stanley Gardner and his wife host John W. Campbell, Robert Heinlein, Clifford Simak, Edward Teller, Ronald Reagan, Douglas MacArthur and Jackie Kennedy to discuss a shared dream in which a time-traveling alien requires them to pick one person to eliminate from history as a prerequisite to a final revision of mankind’s history.

You head out on a quick, rollicking ride back through time, with an unknown pursuer and an ambiguous conclusion.