To develop a topic such as eternal youth, you have to be very creative, have likeable characters and ideally some visual effects. This film has it all. The way the story builds up is superb, Streep acting is wonderful (Hawn's too). The dialogue between Rossellini and Streep is one of my all time favorites. The FX are a masterpiece. I would have given this film a ten, but some scenes towards the end are a little repetitive. In my opinion this is a must see "noir" film. 9/10