Da Vinci Code: What was the "original's" ending?

I likely was the last one in the world to read the Da Vinci Code - a few months ago - after all the hype. What a god-awful ending.... this guy should be sued for just that, nevermind the allegations of plagiarism.

Anyhow, I did look up Google images to see if the descriptions of the Last Supper, (and other Da Vinci paintings mentioned in the book) were the same. That was the fun part when reading.