After a strange accident sidelines Eureka's sheriff, U.S. Marshal Jack Carter takes over the investigation into the mysterious phenomenon that led to the death of a resid ...

What appears to be a ghost begins terrorizing people and disrupting equipment shortly after a funeral, and even more surprising, one of the recently dead reappears alive. ...

Jack shoots Henry after trying to arrest a mysterious man. Twenty-four hours earlier we meet Henry's two college friends who may be involved in Jack's memory loss. Everyt ...

The presence of a crop circle leads to thoughts of an alien invasion, the future of Eureka is threatened when a congressman visits, and Jo and Jack work on their trust is ...

A lab accident causes a scientist to, seemingly, become indestructible, but Carter and Stark have their own concerns. ...

After Fargo triggers a device from the Cold War era, the race is on to shut it off before it starts a world war, but the only solution may lie in the depths of a demented ...

A car accident leads back to scientists at Global, Zoe finds a boyfriend, and Jack tries to drum up support for a town baseball league. ...

Odd fluctuations in computer-controlled environments may have something to do with the return of Eureka's prodigal son. ...

Taggart achieves a medical breakthrough while Fargo invents a device that bridges the divide between computers and human brains. ...

Strange behavior exhibited by the townspeople is investigated by Carter,who has to solve the mystery before Stark makes a decision that could affect the world. ...

When Stark stops Carter from investigating a crime, again, he decides to play hooky. When he contemplates getting away from Eureka, S.A.R.A.H., his house decides to make ...

After another lab accident Jack wakens to a whole new world. ...