The Bible tells us that Elijah came unto the people and asked, "How long halt ye between two opinions?" David Fincher came forth and spake: "One hour and five minutes." Which is precisely how long he keeps us guessing in his new murder mystery "Gone Girl." Is Nick Dunne (Ben Affleck) a disgruntled husband who nevertheless wants the police to find his missing wife Amy (Rosamund Pike), who disappeared under suspicious circumstances ? Or is he in fact one of those supercreeps, such as O.J. Simpson or Scott Peterson, who can barely put on a convincing show of concern when their partner is killed, probably due to the fact that they know what happened to her?