I just watched the movie "Stigmata" last night. Although it was about receiving the 5 wounds of Jesus, it was more about lost sacred writings of Jesus. I figured that this was completely fictional until I read at the end of the movie that in 1945 scrolls were discovered.
That's the Nag Hammadi library, named after the Egyptian place where it was discovered.
It's an interesting collection of Gnostic texts, including alleged lost sayings of Jesus.
See http://www.gnosis.org/naghamm/nhl.html
What was particularly interesting about the Nag Hammadi library, was that for the first time scholars could find out what Gnostics believed from their own writings. Earlier, practically everything we knew about them came from their opponents, escpecially Irenaeus.
According to the movie, the Catholic church wants to keep these newly discovered scrolls secret because these contain Jesus' instructions, in his own words, of how he wanted his church to be continued.
Now, this is just conspiracy theory nonsense. It is fiction, not fact. The Vatican has no say here, except they consider the books to be non-canonical, which is their prerogative (it's a matter of faith, not anything science can tell anything about). These texts are widely distributed. In fact, some professors at my University has been involved in the translation and interpretation of these scrolls, so I know them well.
The Jesus Seminar based some of their work on the Gospel of Thomas ("The Five Gospels"), and consider it older than any of the four "canonical" ones, and most scholars now tend to agree.
There is no longer anything secret about these texts. And unless you are a gnostic, or inclined towards the mystical versions of xtianity, you'll most likely find the Gospel of Thomas and the other gnostic texts quite underwhelming in their wisdom.
- Jan