Arguably some of Heinlein’s best short fiction, Assignment in Eternity offers four fantastic tales including:

“Gulf”  – A secret agent named Gilead is rescued from captivity by a clandestine organization of highly trained supermen and women. Although they seem nefarious at first, Gilead soon realizes that they are, in fact, noble and agrees to join them. After being trained in their ways, he undertakes a mission to stop a weapon of mass destruction.

“Elsewhen” – A university professor engages five students in an experiment to travel to across space and time merely by the power of hypnotism, opening portals to strange and distant worlds, one of which is engulfed in war with an alien race while the other is a serene  paradise of godlike beings.

“Lost Legacy” – A physician, a psychologist, and a parapsychologist manage to tap into their latent abilities of clairvoyance, telepathy, levitation, and telekinesis. Soon after, they find themselves drawn to Mount Shasta in Northern California where they encounter a group of mystics who have long ago mastered such abilities and are waiting for the right opportunity to reveal themselves to the world in the hopes of setting humanity on a path to enlightenment. First, they must overcome evil forces as ancient and powerful as they, forces who wish to keep humanity ignorant and servile.

“Jerry was a Man” – A wealthy couple visits a genetic engineering firm where animals of almost any configuration can be manufactured. During a tour, the wife encounters a polite, elderly ape named Jerry who can speak, but is on death row as he has outlived his usefulness. She is appalled and demands to adopt Jerry, against the company’s policy. The situation escalates to a court hearing for the purpose of determining whether Jerry is entitled to the same rights as humans.