While on the lam, hardened criminal Blackie Nelson gets a chance to live the day over—and this time he plans to evade the police and win the girl!

Once again, a plumber receives an emergency call from 12 Hedge Row.

Phil Winship, an executive at an American company in Iran, finds an odd cap in the desert that transports him to a strange laboratory.

The title suggests that Professor Amos Shute’s intrepid travelers are going back in time to four planets that are identical in every way to our own, but then again, perhaps those four planets were merely at earlier times to begin with. We won’t say one way or another, but we are glad that the Spanish Flu pandemic, World War I, World War II, and World War III were all averted on some Earth.

After high school, young Joe Bragan is offered a job driving his hot rod around the deserts of Libya.