Season 1
Episode: 1x01 | Airdate: Jan 12, 2011
Sam and Dean Winchester are searching for their father, but take time off to investigate several reports of husbands killing their wives... when the husbands' alibis all confirm they were nowhere nearby.
Episode: 1x02 | Airdate: Jan 12, 2011
The Winchesters help Molly, who says that she's the survivor of a car crash that killed her husband. However, the brothers soon realize that Molly is more than she seems.
Episode: 1x03 | Airdate: Feb 2, 2011
The brothers return to their hometown of Lawrence, KS to investigate Sam's supernatural visions, and turn to a friend of their fathers--Missouri Mosely--for help.
Episode: 1x04 | Airdate: Feb 2, 2011
The brothers investigate a series of deaths along an isolated stretch of highway, all of which involved a black Impala just like theirs.
Episode: 1x05 | Airdate: Feb 2, 2011
Dean investigates a series of mysterious cattle mutilations and murders, and finds himself going up against another Hunter whose actions make Dean question his own.
Episode: 1x06 | Airdate: Feb 2, 2011
Sam remembers the time when the Winchesters helped his girlfriend Jessica after Bloody Mary targeted her.
Episode: 1x07 | Airdate: Feb 2, 2011
When two Hunters turn up dead, Sam and Dean team up with a third Hunter, Bobby, to learn if the killings are connected to John and to put a stop to them.
Episode: 1x08 | Airdate: Feb 2, 2011
The Winchesters investigate a series of murders where women of the same general appearance were murdered and their internal organs removed.
Episode: 1x09 | Airdate: Feb 2, 2011
The Winchesters arrive in Las Vegas to take a break, and an Asian Poverty God attaches itself to Dean... and brings him unrelenting bad luck.
Episode: 1x10 | Airdate: Feb 2, 2011
A series of murders during the full moon are blamed on wild dogs, but Sam and Dean suspect werewolves are responsible.
Episode: 1x11 | Airdate: Feb 2, 2011
The Winchester brothers investigate a young man with demon-spawned powers similar to Sam's... and who have may have killed his father with them.
Episode: 1x12 | Airdate: Feb 2, 2011
John goes on a solo mission to save a woman who the Yellow-Eyed Demon is stalking... and who had a father who abandoned her.
Episode: 1x13 | Airdate: Apr 6, 2011
Sam and Dean are stuck in a small town and investigate the legends of a local lake monster that may appear to be more fact than fiction.
Episode: 1x14 | Airdate: Apr 6, 2011
The Winchesters go looking for a Colt that has the power to destroy the Yellow-Eyed Demon... and find John and a father-and-son team of vampires that they helped once before.
Episode: 1x15 | Airdate: Apr 6, 2011
Sam and Dean track the Yellow-Eyed Demon to the town of Salvation and try to kill him once and for all.
Episode: 1x16 | Airdate: Apr 6, 2011
John is forced to make a deal with the Yellow-Eyed Demon to save Dean's life after the car crash.
Episode: 1x17 | Airdate: Apr 6, 2011
Dean remembers an early case involving Sam's elementary school teacher, when the Winchesters were trying to settle down between their monster-hunting trips.
Episode: 1x18 | Airdate: Apr 6, 2011
Sam and Dean check out rumors of a Crossroad Demon that will give a supplicant their heart's desire... in return for their soul.
Episode: 1x19 | Airdate: Apr 6, 2011
In East St. Louis, Sam and Dean try to help Danny and Jake, brothers who have also fallen under the influence of the Yellow-Eyed Demon.
Episode: 1x20 | Airdate: Apr 6, 2011
Dean wakes up one morning and discovers that Mary is alive, he has a wife, and he and Sam have normal lives.
Episode: 1x21 | Airdate: Apr 6, 2011
The Yellow-Eyed Demon gathers his "children" to him for their final test... and Sam and Jake are among their number.
Episode: 1x22 | Airdate: Apr 6, 2011
Dean makes a deal with a crossroad demon to bring Sam back to life, but hides the terrible truth from his brother. Meanwhile, Azazel unleashes his master plan to use Jake Talley to open the Gates of Hell and summon a demon army to Earth.