1.01 - Skin (Original Episode)A demonic shape-shifter commits a gruesome murder. When the brothers investigate, the being borrows Dean's from to continue its killing spree.
1.02 - Roadkill (Original Episode)
"The highway's the only haunted once a year and we got 'till sunup to wrap things up!" Sam, Dean and a near-victim race the earth’s rotation to vanquish a ghost who kills on the anniversary of his death.
1.03 - Home (Original Episode)
After 22 years, Sam and Dean return to their childhood home. Now another beautiful young mother loves there - and, if Sam's nightmares are correct, she may be threatened by the same evil that killed Mary Winchester.
1.04 - Blood of Beast (New Episode)
Sam and Dean help out a young boy, who is being bullied by the older kids at school. We discover that the boy's father is actually a "peaceful" vampire who has sworn not to attack humans and survived by drinking cattle blood. The boy also has vampire blood in him but he is just not yet aware of his true nature.
1.05 - Ghost on the Highway (New Episode)
Sam and Dean are driving along the highway and are suddenly chased by a cop car from behind. They discover that there have been numerous unexplainable car accidents in the area. All accident involved a Chevy Impala. Sam and Dean have to investigate to prove themselves innocent. We discover that an evil spirit has taken the form of an Impala is trying to take revenge on the town.
1.06 - Bloody Mary (New Episode)
Back in 2004, when Sam was studying at Stanford. Sam hears about a suspicious death case occurred in Stanford from Jessica, a girl he's becoming friendly with. John and Dean smell something evil in the case and start investigating behind Sam's college life. They first presume that it is caused by a ghost called "Bloody Mary" but it turns out to be caused by a different ghost.
1.07 - Temptation of Demon (New Episode)
Maria, a faithful Christian is lured by a yellow-eyed demon to become its servant in return of curing her sick daughter. She refuses at first, but is quickly drawn in.
1.08 - Everlasting Love (New Episode)
Multiple homicides in Illinois. The victims are all blond women in their 20s and the crimes scenes leave traces of formaldehyde. Sam and Dean discover fingerprints of a female who died in 1940. A tragic love story of a mad doctor.
1.09 - Poverty Spirit (New Episode)
Dean is taken over by a Japanese "poverty" spirit. He tries to rid himself of the spirit and discovers he must fight the spirit of "prosperity", because these two spirits are really two sides of the same coin.
1.10 - Moon Shine (Original Episode)
Sam and Dean investigate a murder in which the victim was killed by wild animals, suspecting that it was done by hellhounds. Later they find out that is was done by a werewolf.
1.11 - Nightmare (Original Episode)
The brothers pose as priests to gather information at a house visited by sudden death - a death Sam saw in a dream.
1.12 - Origin (Comic Book)
John meets Lily, who is one of the special children and tries to save her from the yellow-eyed demon's plan.