The fifth season of the show picks up where the third season left off with Sam unknowingly opening the cage that held Lucifer and kick starting the apocalypse. In the previous season the show introduced angels into the show and why they were choosing to make themselves known now. Apparently the demon world was attempting to free Lucifer from his prison. Now that he has been freed we carried along as Sam and Dean begin a journey on how to stop Lucifer in his tracks with the help from their friend Castiel.
Since the show first came onto the air, at its heart it has always been about family whether it was dealing with the relationship between Sam and Dean, or Sam and his father, or Dean and his father. What the shows writers do so well is establish a constant struggle to function with another human being, in this case brothers. In most shows the characters will face a problem but by the end of the show the matter has been worked out and everyone is happy again. Supernatural never followed this formula. Even from the first season they established that issues wouldn't always be resolved right away. Sometimes it would take a few episodes, or sometimes the entire season. Regardless this is just another example of why the show works on so many levels.
This season there are a number of good episodes that show how well the creators/writers/actors have honed their craft. Episodes like "Abandon All hope…", "The song remains the same", and "Point of no return" are excellent examples of how the show has grown. Other episodes like "Changing Channels", "The Real Ghostbusters", and "The Curious Case of Dean Winchester" remind us how much fun the creators/writers have making the show as well as how easily the show can poke fun at itself.
The Blu-ray DVD was just released for the fifth season and it packs a whole bunch of excellent features. One allows you to "roam" through Bobby's house and educate yourself on folklore as well as watch how the writers come up with all the stories for this past season. There is a gag reel, which are always fun because you get to see how much fun everyone has while making the show. Lastly, and this one is for hardcore fans, there is the entire run of the web series "Ghostfacers".
Supernatural is a show that could have fallen by the wayside. When it first started out there were moments where it looked like it wouldn't make it. Ratings for the first season weren't that high, but thankfully it was green lit for a second season, which gave the writers a chance to flesh out the show. This proved to be a success in the long run because now the show is entering its sixth season. Supernatural is just a fun show, if you like scary stories, good drama, action, and good chuckle than Supernatural is the show for you.