Spoil the BBC History Website's "Death in Sakkara" for me

I am so crabby.
I got through most of the last chapter of the game (I assume)–

[spoiler]spending an hour crawling through a darkened maze looking for the exit, only to come up to a sliding block puzzle.

After spending a while working on the sliding block puzzle, I had to go somewhere, so I shut down my computer and left. [/spoiler]

When I came back, refreshed and rarin’ to do some puzzle-solvin’, and entered my save code, I found that it took me back to the BEGINNING of the chapter, BEFORE the hours of crap I had already struggled through, rather than back to the puzzle I had been stuck on before.

Would anyone care to just tell me what happens at the end of the game?