"Kids... see things, between the ages of one to four..., that aren't there... A friend of mine had a two year old who walked into their neighbour's house and looked in the corner and said, 'Make the scary man go away'. That's really frightening... There was no one there." Lord Of The Rings star Elijah Wood on the inspiration behind his new comedy horror movie Cooties, in which a group of killer zombie children attempt to take over a school.