But so far Book hasn't shown up in any of the trailers. Makes you wonder... and Whedon is SUCH a one for messing with our heads. He'd kill him off in the first five minutes just to say "Boo!" Remember Jenny Calendar.
Dan
There have been a few screenings of Serenity so far. (sans the special effects, which weren't quite done yet.) While I've been avoiding spoilers for the film, if Book got offed in the film, it would have slipped by now. In fact so far, the only thing's that slipped is that River's big secret is that she's made of chocolate.