"That's not the final sentence," my friend said. "Are you missing the last page?"
"Wait, you're missing the last page of a mystery novel? You think my villain is cliche, but you're somehow missing the final page of a mystery novel?"
So he e-mailed it to me as we spoke, and indeed many things looked different with a few additional paragraphs.
My mom reads so many mysteries that she often forgets whether she's read them. Sometimes, she reads the last few pages to remind herself... but of course that method of checking has its own perils.