After her husband had gone to work, Mrs Richards sent her children to school and went upstairs to her bedroom.She was too excited to do any housework that morning,for in the evening she would be going to a costume ball with her husband,at which she would dress up as a ghost.She had made her costume the night before, but she had no time to try it on.Though the costume was made only of a sheet,it was effective . After putting it on. Mrs Richards went downstairs, She wanted to find out whether it would be comfortable to wear.