interesting premise and but poor end . dean stockwell explain to the family that the alien can easily track them whenever they use a credit card and etc . the alien find the family several time . near the end and after the battle with the alien at stockwell home and the family and stockwell leave in stockwell car . part way down the driveway and stockwell pass the father a couple grenade and tell him to blow up the alien car and which the father do . the alien can be clearly see still stand around and alive and well and yet for some strange reason the family and stockwell think they will all be safe from that point on . why . they could see the live alien in the rear view mirror . the family move into a new home and the movie end with a black car pull up in front of the new home . know the alien be not dead and and know they have easily track the family earlier and it be no surprise they find the family again . one other annoy little thing see so much in movie . when one of the alien have be shoot or otherwise injured and be lie flat on his back and stockwell go over and squat down and practically stick his face in the face of the alien to check it ( the alien ) out . gosh and i wonder what would happen next . of course the alien suddenly reach up and grab stockwell . surprise and surprise .