First of all, you don't even see the doll until 3/4's of the way thru the film. The entire story was ludicrous. I guess the special effects/makeup dept had about $20 for their budget. Because when blood goes to splatter, they use CGI blood to make it appear as if it splattered onto the camera. Also, the old man on the train; I would be HIGHLY EMBARRASSED by the makeup job they did on him. I wouldn't want my name affiliated with doing the makeup on him. They tried making the actor look old. What it looked like was a guy with Silly Putty stuck to his face with cotton balls for eyebrows & hair and also wearing granny glasses. I couldn't believe someone saw what the actor looked like in makeup and said "Yep! Nailed it! He really looks like an old man."
Anyway, do yourself a favor and skip this bomb. It's a time and $ waster.