Go to the part where Moses has just gone to see his brother at the Building site. And he sees the man hitting the slave. Miriam sees this and says something like "Somebody's got to stop this," and Erin just turns away. The picture moves to Moses, who is watching this and goes back to seeing the man being hit. Miriam and Erin aren't there any more, but then it goes back to Moses and back to the man again and there are Miriam And Erin still watching this. Then Moses goes to stop this and they are gone again! You have to watch carefully though!