Season 4



Season Four consists of 22 episodes that aired on Thursdays at 9:00 pm in the United States beginning September 18, 2008, and ending May 14, 2009.

Season Summary
After spending four long, horrific months in Hell, Dean Winchester is miraculously raised from the Underworld and resurrected by an angel of the Lord God Himself named Castiel, one of several angels who appears throughout the season. The rest of the season follows the brothers, with the help of their friend Bobby, as they work with Castiel and his subordinate and friend Uriel to stop Lilith's plan of breaking the 66 Seals, which would allow the fallen archangel Lucifer himself, to be released from his cage in Hell.

Along the way, the boys meet a girl named Anna who not only has the ability to hear angels but is also a fallen angel herself. Eventually, angels turn up dead and the angels capture Alastair, Hell's Grand Torturer demon who seems to know Dean well, and they ask Dean to torture him with them assuming its the demons killing the angels, but Alastair, before he dies, says its not the demons. And eventually, Castiel learns that his own brother Uriel turns out to not only be working for Lucifer, but has convinced several loyalist angels to join him and to free Lucifer from his cage. Along the way, Dean learns that he broke the first seal while he was in Hell by by being convinced by Alastair to slaughter innocent souls in the Underworld, especially when he reveals to Sam that he wasn't in Hell for four months but instead 40 years. Additionally, the brothers meet a Prophet of the Lord named Chuck.

Sam and Dean's relationship is also strained as Sam starts siding with Ruby over Dean. He also begins to give into his demonic side by drinking demon blood to become strong enough to kill Lilith. After tracking down and killing Lilith, Sam learns her death is actually the final seal and Ruby was deceiving him all along. Dean arrives too late to stop him, but the brothers kill Ruby as Lucifer's prison opens up beneath them and he walks out free.

Main

 * Jared Padalecki as Sam Winchester (22/22)
 * Jensen Ackles as Dean Winchester (22/22)

Supporting

 * Misha Collins as Castiel (12/22) and Jimmy Novak (1/22)
 * Genevieve Cortese as Ruby (11/22)
 * Jim Beaver as Bobby Singer (7/22)
 * Julie McNiven as Anna Milton (5/22)
 * Mark Rolston and Christopher Heyerdahl as Alastair (5/22)
 * Robert Wisdom as Uriel (4/22)
 * Katherine Boecher and Sierra McCormick as Lilith (3/22)
 * Traci Dinwiddie as Pamela Barnes (3/22)
 * Kurt Fuller as Zachariah (3/22)
 * Mitch Pileggi and Rob LaBelle as Azazel (2/22)
 * Colin Ford as Young Sam Winchester (2/22)
 * Rob Benedict as Chuck Shurley (2/22)
 * Juliana Wimbles as Cindy McKellan/Demon (2/22)
 * Mitch Pileggi as Samuel Campbell (1/22)
 * Amy Gumenick as Mary Campbell (1/22)
 * Matt Cohen as John Winchester (1/22)
 * Jake Abel as Adam Milligan (1/22)
 * Kirsten Kilburn as Lucifer (1/22)