Sam and Dean investigate a series of mysterious drownings written off as suicides. They discover the spirit is an angry little boy with the power to travel through water who is taking revenge on certain town inhabitants for a dark secret buried long ago. Dean forms a bond with a young boy who seems to have the power of premonition.

After a construction worker is killed by insects burrowing into his brain, Sam and Dean investigate the town's history and find that the new housing development is being built on sacred Indian land. The Indians put a curse on the land after their reservation had been ravished and destroyed. Sam and Dean must find a way to survive and kill the deadly swarm of bees, locusts, spiders and beetles.

Sam and Dean finally make contact with their father, but he tells them to stop looking for him and sends them on another ghost-hunting job. Frustrated with their father's evasiveness, Sam sets out alone to find him while Dean stays back to obey his father. Dean investigates a small town in Indiana where couples have gone missing the same day each year and discovers the farmers are sacrificing them to a Pagan God who takes the form of a scarecrow.

Sam has a reunion with a girl he once met, Meg, but it turns out that she is using the brothers to lure their father John to his doom.

When Meg boasts that John is her prisoner, the boys visit a friend of their father's to get information about demonic possessions and ways to trap a demon. It turns out Meg is not what she appears.

In the aftermath of the car crash, the surviving Winchesters go to the hospital, where one is stalked by a Reaper while another must consider sacrificing himself to save the others.

Dean and Sam investigate the death of a young college student who died in a car accident, but whose grave is now surrounded by a circle of dead plants.

Sam and Dean investigate the slayings of blonde women and find that the ghost of the first known serial killer in US history is responsible. Jo disobeys Ellen's wishes and follows them along, and is captured by the ghost.

An angel causes people to cheerfully go out to murder, and when the Winchesters investigate one of them falls under its sway.

Sam and Dean investigate a brutal death and discover that the killer is a lycanthrope: a werewolf.

After the fight between Jake and Sam, Dean has to make the ultimate sacrifice for his brother. Meanwhile the Yellow-Eyed Demon has his new servant and plans to unleash the hordes of Hell.

Seven demons, based on the Seven Deadly Sins, are released into the world and the brothers must combat them with the aid of a married Hunter couple.

The brothers capture a female vampire named Lucy who has no idea how she became one, which leads them to Dixon, a male vampire who is a little too giving. Gordon returns with a vengeance leaving Sam in danger.

Dean is killed after looking into a case about the disappearance of a man with Sam. The next morning, Sam is shocked to find Dean alive and is hit with the realization that he is reliving the day before.

FBI Agent Henricksen finally captures Sam and Dean, but is caught in the middle when a horde of demons descends on the small-town jail to eliminate the brothers.

Sam, Dean, and Bobby hunt down Lilith and fight her and her demons in a final effort to save Dean's life.

Dean wakes up in his own coffin. How did he return from the dead? What caused the hand-shaped welt on his shoulder? And what happened in the four months he spent in Hell, time he can't remember?

Dark powers. Dean fears Sam is using his paranormal gifts in conflict with God's plan. And an ordinary guy in an ordinary town gets a major case of the munchies. It starts with steak - and moves to human flesh.

Dad, Mom, two kids and a dog. An all-American family doesn't stand a ghost of a chance against the bloodthirsty force that turns their new home-sweet-home into a haunted house.