next door, in the adjacent house, in the adjacent apartment (adverb)
at or in or to the adjacent residence
"the criminal had been living next door all this time"
next door (Adverb)
In an adjacent place.
next door (Adjective)
That is in an adjacent place; that is located next door.
Next Door is the name of a short 1975 film written and directed by Andrew Silver. The 24-minute black-and-white film starred Matthew Bradley and Paul Guilfoyle. Kurt Vonnegut is also credited with writing the story.