I think that I'd like to join in if you'll have me. I've never played Trail of Cthulhu, so I'd like to give it a go.
I do own Eternal Lies, but I've not read it, I bought it as "one for the future" and it looks very nice on my bookshelf.
I've no idea of the plot details, other than the blurb on the back of the book. I also don't even remember which cities and countries are used as locations. I do remember in very general terms how the main evil thing appears, but not why or how to win or any other plot details that might be a spoiler.
Basically it's a very big book and I gave it a quick skim through when it arrived and then put it onto my Cthulhu bookshelf, where it's remained to this day!

It might take me a day or two to read through the game so far, and I won't start until you've replied, so I can stay unspoiled in case you think I know too much.