These three short novels from science fiction master Dean McLaughlin explore worlds across reality -- and across the galaxy.

In "Hawk Among the Sparrows," a fighter jet carrying nuclear-missiles is thrown back through time and pitted against World War I airplanes. What chance do wood and cloth planes have? You'll be surprised.

In "The Permanent Implosion," a laboratory accident creates a perfect, unfillable vacuum -- which begins to drain the entire Earth's atmosphere! How can the leak be stopped?

In "The Brotherhood of Keepers," humanity discovers a race of nonhuman beings evolving toward intelligence on a planet orbiting a binary star. Can humanity help? Should we?