The third season of the fantasy series set in the quirky and seemingly perfect small town of Eureka, where the hidden work of America's brightest scientists can lead to innovation or utter chaos.
Episodes
Episode 1
Bad to the Drone
July 29, 200844m7.8
The search is on for an escaped drone as Eva Thorne arrives to assist the cleanup of damages which Global Dynamics has caused.
Episode 2
What About Bob?
August 5, 200844m8.0
Carter and Allison investigate when a scientist mysteriously disappears from a sealed biosphere. Meanwhile, the "Fixer" tries to make Eureka's efforts more profitable.
Episode 3
Best in Faux
August 12, 200844m7.8
Eureka's annual dog show is underway and is like none other. Meanwhile, Sheriff Carter experiences an earthquake; Zoe debates quitting the accelerated physics program; and Allison starts the process of fitting her wedding dress.
Episode 4
I Do Over
August 19, 200844m8.3
It's Allison and Stark's wedding day and Carter finds himself reliving it over and over. Meanwhile, Carter's sister, Lexi, visits the town.
Episode 5
Show Me the Mummy
August 26, 200844m7.9
A search for a mummy ensues after a famed archaeologist opens the tomb of an Egyptian queen at Global Dynamics.
Episode 6
Phased and Confused
September 9, 200843m7.6
Carter's job is made more difficult when a super hero emerges. Meanwhile, Zoe and her friends are imperiled when Thorne makes a subterranean search beneath Eureka.
Episode 7
Here Come the Suns
September 16, 200843m8.2
The Eureka mayoral race is overshadowed by the sudden arrival of a second sun, forcing Carter, Allison and Zane to investigate it more closely.
Episode 8
From Fear to Eternity
September 23, 200844m8.3
Trust issues are produced by a scientific find, along with sinister results. Zoe's life is in jeopardy, and Eva Thorne knows what has caused the predicament.
Episode 9
Welcome Back Carter
July 10, 200944m8.2
Carter interviews for a job with the Department of Homeland Security, after being terminated as the sheriff. Deputy Lupo decides to resign after discovering that a very personable robot is the new sheriff.
Episode 10
Your Face Or Mine
July 17, 200944m7.9
Jo displays atypical behavior after a DNA scan malfunctions, unfortunately it's while she's interim sheriff because Carter is undergoing a 48-hour DOD recertification test.
Episode 11
Insane In The P-Brane
July 24, 200944m8.1
Dr. Tess Fontana reopens Section 5, causing objects to become ambulatory , possibly due to poltergeists.
Episode 12
It's Not Easy Being Green
July 31, 200944m8.0
Carter finds himself chasing down creation of blob-ical like proportions when a series of escalating pranks turn deadly. Elsewhere, long-term rivals from Area 51 come to Eureka for a bowling tournament.
Episode 13
If You Build It...
August 7, 200944m8.2
Eureka's teenagers who appear to have been manipulated while asleep, gathered in a field where they assembled a strange structure comprised of scrap metal and electronics.
Episode 14
Ship Happens
August 14, 200944m8.0
Henry's ship returns causing Carter to fear it maybe linked to the town's deadly electrical anomalies.
Episode 15
Shower the People
August 21, 200944m8.0
Allison's baby shower fetches her a load of eco-friendly gifts and the discovery of a drowned scientist in a location where drowning is impossible.
Episode 16
You Don't Know Jack
August 28, 200943m7.3
Global Dynamics sonic cleaning coincides with a phenomenon in which the citizens of Eureka develop a form of amnesia. Meanwhile, Allison goes into labor.
Episode 17
Have an Ice Day
September 11, 200944m8.0
The first day on the job as temporary head of Global Dynamics proves daunting for Tess when a new Ice Age comes to Eureka; and a familiar face returns in the process.
Episode 18
What Goes Around Comes Around
September 18, 200944m8.1
Tess has a job offer from Australia, Zoe is prepared to leave for Harvard and Carter has a magnetic disturbance above Eureka to contend with, in the third season finale.