In season two, the bodies of Dexter’s victims are uncovered and an investigation is launched in Dexter’s own department to find the killer, dubbed the “Bay Harbor Butcher.” Debra struggles…

Everything is on the line as the battle against God continues. A familiar face returns to join the fight.

Sam, Dean and Castiel investigate a string of suspicious deaths that have a biblical element to them.

Sam and Dean continue to worry about the condition of Jack’s soul.

Sam and Dean race to help a friend in need. Meanwhile, Mary is concerned for Jack’s well-being, and Castiel enlists help from Jo/Anael to track down a miracle.

Sam and Dean must figure out how to stop the bloodshed when Donatello, who, in his current condition, is inadvertently scrambling the order of future prophets. Nick comes face to…

Dean spends some bonding time with Mary and Donna. Nick finally finds the answer he has been searching for. Sam is left to make an unimaginable choice.

Sam and Castiel track down a Shaman, who may be able to help a friend. Nick continues to spiral down a dark path as he looks for answers surrounding the…

Sam finds a clue to Dean’s whereabouts, so he, Mary and Bobby set out to investigate. Castiel imparts some sage advice on Jack, who, still desperate to belong, seeks out…

Sam enlists everyone’s help in trying to track down Dean, who can literally be anywhere. Meanwhile, Castiel may be in over his head after meeting up with an unreliable source….

Our heroes, Sam and Dean Winchester, continue to be tested in the battle between good and evil, but one impulsive decision could alter the lives of one the brothers forever.

Sam, Dean, Castiel and Gabriel must work together if they have any hope of bringing Mary and Jack home. Meanwhile, Rowena’s encounter with Lucifer may alter the outcome of the…

Lucifer rules over heaven but things aren’t going exactly as planned, exasperating his first lady, Jo. Sam and Castiel are perplexed by the return of Gabriel. Meanwhile, Dean gets one…

Sam, Dean and Castiel search for Lucifer who, meanwhile, strikes an unlikely deal with a local faith healer named Sister Jo. Asmodeus inches closer to finding Jack.

As Sam and Dean continue their search for Jack, with Asmodeus hot on their trail, they stumble across a familiar foe. Meanwhile, Lucifer manages to escape Michael’s grasp and finds…

Sam and Dean begin to explore what Jack is capable of doing with his powers. An unexpected visit from Donatello alerts the boys to the fact that Jack will need…

Sam and Dean are left to pick up the pieces after the loss of their mother, the demise of Crowley and the heartbreaking death of Castiel. The birth of Jack…

Lucifer battles Sam, Dean and Castiel for control of his unborn child.

Sam and Dean are alarmed when they learn hunters are being killed by suspicious “accidents” all over the country. They decide it is best to find Mary and make sure…

Sam comes up with a way to stop Lucifer’s baby but Castiel has something else in mind for Kelly. Dean is furious when he finds out someone stole the colt….

Sam and Dean get a lead on Kelly Kline’s whereabouts. Mick drops by the bunker unexpectedly and decides to join the hunt.

An attack by an invisible hellhound at a campsite leads Sam and Dean to investigate the mysterious circumstances. Meanwhile, two of Crowley’s own personal demons uncover what he has been…

When Sam and Dean look into a murder at a museum, they learn a ghost from a merchant ship that sunk in 1723 may be at the heart of the…

Mary asks Sam, Dean and Castiel for help on a case she’s working but neglects to mention the British Men of Letters are involved. When Mary is double crossed, everything…

Lucifer takes a trip home and tries to assert himself into Heaven. Crowley tells Sam and Dean he has a way to take down Amara.

Now that he has Sam in the cage with him, Lucifer offers Sam a way out but it comes with a steep price. Dean and Castiel look into the angel…

Amara unleashes her power on the local townspeople as she issues a shocking challenge. Dean tries to better understand the hold Amara has on him, while Sam and Crowley come…

Lucifer drives Sam to the breaking point and Sam ends up in a mental hospital. Desperate to save his brother, Dean calls every hunter he knows for help. One of…

Four years ago, Sam and Dean helped a woman named Nora exorcise a demon that was systematically killing women in a small town. They managed to save a postal worker,…

The broken wall in Sam’s head causes him to have hallucinations, and he has difficulty discerning what’s real and what’s not. Bobby worries that Dean is beginning to stumble under…

Castiel doesn’t kill Sam, Dean and Bobby but warns them not to interfere in his business. Assuming his new role as God, Castiel sets out to right some of the…

The showdown between good and evil is at hand. With the Apocalypse looming, Sam and Dean realize they are out of options and make heart-breaking decisions that will change their…

Sam and Dean are kidnapped by a group of gods, including Kali, Ganesh, and Baldur and held hostage in a small hotel. The gods want to use Sam and Dean…

Sam, Dean and Castiel track down the Colt and head off to find Lucifer to send him back to Hell. It’s a hunters’ reunion when the crew joins forces with…

Sam decides to stop hunting but has a hard time after he receives a surprise visit. Dean and Castiel try to find the Archangel Raphael in their bid to stop…

Sam, Dean, and Bobby must deal with the aftermath of the Devil’s escape from Hell, and receive startling news from the Prophet Chuck.

Season 4 of Grey’s Anatomy premiered on September 27, 2007. The fourth season of the American television medical drama Grey’s Anatomy, commenced airing in the United States on September 27,…