Complex sentence: Those who wish to read it must check in two forms of ID with the librarian, and are then supervised while they read the story behind the closed doors of a special reading room and it will not be published until 50 years after the death of Salinger.
Split into simpler sentences: Those who wish to read it must check in two forms of ID with the librarian, and are then supervised while they read the story behind the closed doors of a special reading room. It will not be published until 50 years after the death of Salinger.