Revolutionary Road

Finally kicked off my 2009 movie viewing this weekend. Decided to start with the 2008 drama titled Revolutionary Road, which has the main characters played by Leonardo DiCaprio and Kate Winslet. Set in the 1950s, the movie deals with a couple who struggles with the ordinariness of their lives and the conflicts of their marriage issues as they desire for a better life. I left the movies slightly confused, so I am wondering if I need to read the book for some clarification.