The Nevernever is a magical realm of the supernatural separate from the normal world.
The Nevernever is the spirit world. It exists alongside our own as a sort of alternate dimension, but its shape is not the same as the Mortal world. The Nevernever is vast, much, much larger than the mortal world, perhaps infinite.
The Nevernever touches the Mortal world in places where they have something in common, a resonance of energies. If a point in the Nevernever is a dark and spooky place, then it touches a dark and spooky place in the mortal world. But, maybe five feet over, it's only sad, and that leads to a place in a cemetery on the other side of the country.
The Nevernever contains—somewhere—the afterlives realms known by various names: Heaven, Hell, Olympus, Elysium, Tartarus, Gehena and others.
The walks in the Nevernever are very rarely only five feet away, and a person might get confronted by a horrible creature. The Nevernever is a scary place. It is wise to do a lot of planning and have back-up when exploring. However, knowing the Ways, the safe paths, can get a person to a far away location quick and easy with a minimum of beastial interference.
In the seriesEdit
In Grave Peril, a well-known ectomancer, Mortimer Lindquist, has a theory that the barrier between this world and the Nevernever is slowly being torn away. He says that the border has been waggling back and forth for the last two weeks. The instability has been making it easier to form bigger, stronger ghosts when people die. Soon, the border will be so thin that there will be more problems with demon attacks than with gang violence. Mortimer is afraid of some super ghost that is apparently coming. He's leaving town and tells Harry Dresden to do the same.
In Ghost Story, Harry Dresden and the Lecter Specters and the Ghost Soldiers—pass through Evil Bob's defenses in the Nevernever to enter the Big Hoods's hideout to save Mortimer Lindquist from the Grey Ghost (aka Corpsetaker).