In The Crack in Space, a repairman discovers that a hole in a faulty Jifi-scuttler leads to a parallel world. Jim Briskin, campaigning to be the first black President of the United States, thinks alter-Earth is the solution to the chronic overpopulation that has seventy million people cryogenically frozen; Tito Cravelli, a shadowy private detective, wants to know why Dr. Lurton Sands is hiding his mistress there; billionaire mutant George Walt wants to make the empty world all his own. But when the other Earth turns out to be inhabited, everything changes.