Supernatural, Season 4, Episode 1 (Lazarus Rising)
Protagonists: Sam, Dean, Bobby, Pamela Barnes, Castiel
Supernatural, Season 4, Episode 2 (Are You There, God? It’s Me, Dean…)
Protagonists: Sam, Dean, Bobby, Castiel
Supernatural, Season 4, Episode 3 (In the Beginning)
Protagonists: Sam, Dean, Castiel, John, Mary, Sam Campbell
Supernatural, Season 4, Episode 4 (Metamorphosis)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 5 (Monster Movie)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 6 (Yellow Fever)
Protagonists: Sam, Dean, Bobby
Supernatural, Season 4, Episode 7 (It’s the Great Pumpkin, Sam Winchester)
Protagonists: Sam, Dean, Castiel
Supernatural, Season 4, Episode 8 (Wishful Thinking)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 9 (I Know What You Did Last Summer)
Protagonists: Sam, Dean, Anna Milton, Castiel
Supernatural, Season 4, Episode 10 (Heaven and Hell)
Protagonists: Sam, Dean, Castiel, Anna, Pamela
Supernatural, Season 4, Episode 11 (Family Remains)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 12 (Chriss Angel is a Douche Bag)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 13 (After School Special)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 14 (Sex and Violence)
Protagonists: Sam, Dean, Bobby
Supernatural, Season 4, Episode 15 (Death Takes a Holiday)
Protagonists: Sam, Dean, Pamela, Tessa, Castiel
Supernatural, Season 4, Episode 16 (On the Head of a Pin)
Protagonists: Sam, Dean, Castiel, Anna
Supernatural, Season 4, Episode 17 (It’s a Terrible Life)
Protagonists: Sam, Dean, Ghostfacers
Supernatural, Season 4, Episode 18 (The Monster at the End of This Book)
Protagonists: Sam, Dean, Castiel, Chuck/God
Supernatural, Season 4, Episode 19 (Jump the Shark)
Protagonists: Sam, Dean
Supernatural, Season 4, Episode 20 (The Rapture)
Protagonists: Sam, Dean, Castiel, Anna, Bobby