bill paxton and of alien and near dark and and terminator fame and surprise me with his debut a director for frailty . he hit on all cylinder and but there be one implausibility near the end that involve the fbi agent ( power booth ) which deduct a point from this otherwise chilling and think provoke thriller . other than that and this movie be just fine . bill paxton play dad . he never give a first name and but that be not a weakness of the film . it in fact strengthen the film and allow the viewer to see him a a sort of symbol of some kind . he have a vision one day which he say be send from god tell him that the world be come to an end and both he and his two son fenton meiks ( matt oleary ) and adam meiks ( jeremy sumpter ) must fine the demon and kill them . the demon look like normal people which they kill and and this make the viewer wonder if dad have just lose his mind and or be he really do god work . there be scene that reflect both point which add to the confusion and give the film more suspense . the story be tell in flashback by one of the son who be now grow up ( matthew mcconaughey ) and be speak with fbi agent wesley doyle ( power booth ) who be very skeptical and rightfully so . after all it not everyday that someone come in to your office to tell you that he know who the killer be . the film have many twist and and bill paxton directs splendidly by keep u guess without lose interest . the acting be incredible . the two young lead and paxton work great together and look like a normal family even though they be all involve in murder . like i say there be the one implausibility involve power booth character and but it really isn not a big thing . this be an extremely well make film involve faith and family .