public Scene Search(Scene scene)
 {
     return story.Where(x => x.scene == scene.scene).FirstOrDefault();
 }
 public Scene NextScene(Scene scene)
 {
     return null;
 }
 public Scene PrevScene(Scene scene)
 {
     return null;
 }
 public void Add(Scene scene)
 {
     story.Add(scene);
 }