"In a multiverse filled with universes, there’s plenty of space and outer space for multiples, contingents, and alternates. Where does alter ego meet alternate ego? How many repeated extraterrestrial invasions does it take to stir Earth’s defenses to action? Can a man full of life really investigate his own murder? The latestIfscapesinstallment,Perennials of Paradox explores these questions over and over in a brand-new collection of science fiction and fantasy short stories."