Though it's considerably longer than the last teaser that was released, this new promo for J.J. Abrams' upcoming book with Doug Dorst, S., offers barely any more hints as to what we should expect when the book is released next month. We already know it's a mystery (and judging by this teaser, likely one that involves a murder), and that it'll be a sort of book-within-a-book with a main story following a mystery, correspondance in the form of letters between two lovers, and various clippings and drawings related to the story.
The only thing this trailer really does is prove that it'll be creepy, because there's a dude getting his mouth sown shut around the end, and if that doesn't make your skin crawl, I'm not sure what else will.
You can check out the teaser above. S. is set to be released on October 29th.