Versions of the Christian Bible without the Apocrypha contain 66 books, each being one long story or comprised of many different stories. Versions of the Christian Bible with the Apocrypha contain 73 books.
The number of books in the Bible depends on if the version of the Bible includes the Apocrypha, which is a selection of books that is recognized only by some denominations of Christianity and only on a limited bases by others. It is also necessary to clarify what defines a "story." Many stories in the Bible are contiguous, meaning that one picks up where the other left off. Depending on who is defining what constitutes a Biblical story, these continuations may be considered part of the original story or may be separate stories.