Seasons & episodes
5 seasons · 77 episodes
Episode 01
Pilot
An accident leads a U.S. Marshal and a teenage girl to a peculiar town populated by scientists and their families where 10-year-old boys are in 11th grade, the local diner doesn't believe in menus, and E=MC² was just the beginning. Just as the Marshal starts to get settled into the swing of things, a local scientist develops a bomb that seems to appear anywhere and eats all the matter around it.
Episode 02
Many Happy Returns
The citizens of Eureka attend the funeral of Susan Perkins, only to find out that she is in fact alive. Meanwhile the Sheriff moves into an underground bunker that is actually a 'smart house' controlled by a computer dubbed 'S.A.R.A.H., and begins to investigate a 'ghost' that has been appearing in town.
Episode 03
Before I Forget
Something starts to steal the townspeople's memory...
Episode 04
Alienated
After hosting a movie party, Spencer is found the next day in the middle of a crop circle, claiming he was abducted by aliens; and then other people who attended the party start to go missing as well. Elsewhere, the legislator responsible for Eureka's funding visits the town, and gets dragged into a Sector 5 experiment...
Episode 05
Invincible
An unpredictable researcher accidentally unleashes a dangerous artifact which was previously hidden by Nathan Stark.
Episode 06
Dr. Nobel
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.
Episode 07
Blink
Carter investigates an unusual car accident. Meanwhile, Stark, under the stress of completing a project on time, pressures two research teams to produce results.
Episode 08
Right as Raynes
A former resident returns to Eureka and creates mayhem which threatens Global Dynamics, prompting Stark to take action.
Episode 09
Primal
Taggart achieves a medical breakthrough while Fargo invents a device that bridges the divide between computers and human brains.
Episode 10
Purple Haze
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.
Episode 11
H.O.U.S.E. Rules
A bad day in the lab forces Carter to rethink his decision to live in Eureka, prompting an intervention from S.A.R.A.H. (the self Activated Residential Automated Habitat.
Episode 12
Once in a Lifetime
Ambition trumps common sense when Stark is given a chance to try out the Top-secret artifact. Once it's tested, Eureka warps into the future and ends up in 2010, where the town is different.
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