Larry and Myron see the ghost of Don Santiago on the main floor of the castle. Don Santiago disappears into a chest. When they open the chest they see Don Santiago's skeleton (Larry remarks that 'that's all that's left of him'. Later in the family crypt, they see Don Santiago in his glass coffin and remark that he still looks the same. The ghost could have disappeared into the chest but the skeleton can only be in one place.
Tony Warren: It's worse than horrible because a zombie has no will of his own. Every once in a while you see him walking about with dead eyes blindly following orders, not knowing what they do and not caring.