Beginning with “The 400 Blows,” director Francois Truffaut made a series of films about the impetuous Antoine Doinel, in which this is the last. Antoine is now 30, working as…

A film director, Jean, his producer, Marc, and his assistant, Lucette, board the Trans-Europ-Express in Paris bound for Antwerp. Once in their compartment it occurs to them that the drama…