No telling how good Ben Affleck‘s Gone Baby Gone (Miramax, 10.19) may be, but the trailer is very well cut — a solid indication of a pro-level thing. You can sort of tell that Casey Affleck gives a sharp, convincing performance as a Boston-area private dick. Morgan Freeman appears to be doing his excellent usual usual; ditto Michele Monaghan. It feels like this could be Mystic River and then some. You can’t trust feelings and intimations, of course. The proof will be in the pudding, which I presume will be served at the Toronto Film Festival.