The Ghost Children

Classmates

I am currently reding The Ghost Children. It is about a girl and a boy whoes parents died so they went to their great aunts house. After their flight they have to stand outside in the rain to wait for their great aunt. All the sudden a strange man in the truck comes up and claims that hes their ride. At first they arent so sure if they should get in but he convinces them. Once they get there they get freaked out at the "children". I was wondering what the children looked like and why were they so freaked out?

AK