I saw a recent documentary that claims carter discovered tut;''s tomb years before the "official" opening, and even went as far as to say that he put in a false wall too.
Apparently you can easily see the difference in the workmanship on the paintings.

Can anyone here remember the title of this book?

"The Tutankhamun Deception" by Gerald O'Farrell is the book I think you are talking about. Completely unbelieveable but hey, it sells books!

That's the one.

Wanted to get hold of a copy & get out the maps & elevations of the valley to see how likely it is.

I remember reading somewhere that the Rameses tomb allegedly used as the entrance is much higher than the tut tomb, and I also can't see how Carter could both repaint & reseal and get out himself - unless there was some major restructuring done.

Still - we know he was very unscrupulous and had no worries about lying, thieving and similar, so it is possible.
But I would like to actualy read the thing properly & see what evidence is offered.

For me, one of the reasons to credit this were the way the Chariots had been sawn through - not much use in the afterlife like that, and AFAIK (which might well be wrong) is that funerary objects were supposed to be in usable condition.

The entrance to Tut's tomb is below that of Rameses. A group of workmen's huts, from the ancient Dynasties, covered the site of the entrance to Tut's tomb. Carter was hesitant about removing these--this is the reason so many years went by before the tomb was found.
It does Carter a great dis-service to say that he was unsrupulous, lying and a thief. His careful excavation of the tomb and removal of its contents are a very good example of how a excavation should be carried out.
In so far as him finding the tomb and keeping it a secret so that he could loot it himself...pure imagination!
Insofar as the chariots are concerned. The Egyptians were not so worried about condition of equipment in this life--they would be whole in the next. Previous examples are broken pottery--it's been "killed"--found in burials. The many models to be seen in the Metropolitan Museum in NYC are the same princlipal. It may be a model of brewing in the tomb, but in the afterlife it was a full-sized brewery. Same idea with shabtis--the were small figures here in the tomb, but became full-sized adults in the after-life.