A few weeks ago, we posted this mysterious trailer for a new project from the mind of J.J. Abrams.  Now, the second half of that teaser has been released along with some details on what exactly that project is.  It seems that Abrams mystery box not only encompasses the world of television and movies, but now books as well.  This new project, titled simply S., has been revealed as a collaboration with author Doug Dorst (Alive in Necropolis) and appears to be every bit as much a mystery as Abrams' previous works.  Blending the use of crossed paths of multiple characters in David Mitchell's Cloud Atlas with the unconventional presentation of Mark Z. Danielewski's House of Leaves, S. tells the story of the final novel of an enigmatic author and two readers who find each other through the margins of the book.

Hit the jump for both trailers and the book's synopsis.

Here is part one:

And the newly-released part two (via EW):

jj abrams s. doug dorst

Here's the synopsis for S. (via Amazon):

One book. Two readers. A world of mystery, menace, and desire.

A young woman picks up a book left behind by a stranger. Inside it are his margin notes, which reveal a reader entranced by the story and by its mysterious author. She responds with notes of her own, leaving the book for the stranger, and so begins an unlikely conversation that plunges them both into the unknown.

The book: Ship of Theseus, the final novel by a prolific but enigmatic writer named V.M. Straka, in which a man with no past is shanghaied onto a strange ship with a monstrous crew and launched onto a disorienting and perilous journey.

The writer: Straka, the incendiary and secretive subject of one of the world’s greatest mysteries, a revolutionary about whom the world knows nothing apart from the words he wrote and the rumors that swirl around him.

The readers: Jennifer and Eric, a college senior and a disgraced grad student, both facing crucial decisions about who they are, who they might become, and how much they’re willing to trust another person with their passions, hurts, and fears.

S., conceived by filmmaker J. J. Abrams and written by award-winning novelist Doug Dorst, is the chronicle of two readers finding each other in the margins of a book and enmeshing themselves in a deadly struggle between forces they don’t understand, and it is also Abrams and Dorst’s love letter to the written word.