An unpredictable researcher accidentally unleashes a dangerous artifact which was previously hidden by Nathan Stark.

A sleeping weapons system is accidentally awakened by Fargo and Spencer. Henry tries to avert the pending catastrophe with the help of a retired, nonsensical scientist.

An accident leads a U.S. Marshal and a teenage girl (who later is revealed to be his daughter) to a peculiar town populated by scientists and their families where 10-year-old…

After Dean’s encounter with Castiel, Dean, Sam and Bobby brush up on their biblical lore when they’re attacked by the vengeful spirits of people from the Winchesters’ past. They’re warned…

The Winchesters investigate a series of crimes where robbers with no criminal past commit suicide after the hold-ups.