I have read neither the book nor was the name known to me. Property me RUBY simply viewed as. I think the film super. However, I did not know that the movie simply stops .... and in sapphire blue continues. For a German film super ... the effects are really good. Taken actors are really bad, but I can overlook about :-) Nice story about a girl, what learns that she can travel through time. Unfortunately, the continuation of sapphire blue is totally laaaaangweilig-was annoyed so.