第 3 季 共 18 集
播出时间:2008年7月30日
第 1 集 Bad to the Drone
播出时间:2008年7月30日
The search is one for an escaped drone as Eva Thorne arrives to assist the clean up of damages which Global Dynamics has caused.
第 2 集 What About Bob?
播出时间:2008年8月6日
Carter and Allison investigate when a scientist mysteriously disappears from a sealed biosphere. Meanwhile, the "Fixer" tries to make Eureka's efforts more profitable.
第 3 集 Best in Faux
播出时间:2008年8月13日
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.
第 4 集 I Do Over
播出时间:2008年8月20日
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.
第 5 集 Show Me the Mummy
播出时间:2008年8月27日
A search for a mummy ensues after a famed archaeologist opens the tomb of an Egyptian queen at Global Dynamics.
第 6 集 Phased and Confused
播出时间:2008年9月10日
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.
第 7 集 Here Come the Suns
播出时间:2008年9月17日
The Eureka mayoral race is overshadowed by the sudden arrival of a second sun, forcing Carter, Allison and Zane to investigate it more closely.
第 8 集 From Fear to Eternity
播出时间:2008年9月24日
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.
第 9 集 Welcome Back Carter
播出时间:2009年7月11日
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.<br />
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第 10 集 Your Face Or Mine
播出时间:2009年7月18日
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.
第 11 集 Insane In The P-Brane
播出时间:2009年7月25日
Dr. Tess Fontana reopens Section 5, causing objects to become ambulatory , possibly due to poltergeists.
第 12 集 It's Not Easy Being Green
播出时间:2009年8月1日
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.
第 13 集 If You Build It...
播出时间:2009年8月8日
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.
第 14 集 Ship Happens
播出时间:2009年8月15日
Henry's ship returns causing Carter to fear it maybe linked to the town's deadly electrical anomalies.
第 15 集 Shower the People
播出时间:2009年8月22日
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.
第 16 集 You Don't Know Jack
播出时间:2009年8月29日
Global Dynamics sonic cleaning coincides with a phenomenon in which the citizens of Eureka develop a communal form of Alzheimer's disease. Meanwhile, Allison goes into labor.
第 17 集 Have an Ice Day
播出时间:2009年9月12日
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.
第 18 集 What Goes Around Comes Around
播出时间:2009年9月19日
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.