Enjoyed today's episode, except that now I think Merriman sounds far too young!
Very atmospheric, a lot of great sounds today. You do have to wonder, though - if the quest for the signs is so critical, why the hell is an 11 year old boy having to do it on his own?! (See also: Potter, Star Wars, etc).
We haven't got much of a sense of Will's family yet, I can't remember if that comes later.