- 1 Bad to the Drone
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Eureka is threatened by an intelligent drone with "issues" after an anti-missile test. Meanwhile, Eva Thorne, nicknamed "The Fixer" after dismantling and rebuilding several corporations, arrives in Eureka to evaluate Global Dynamics' expenditures.
Average Episode Rating: 4.0 | Air Date: 2008-07-29
- 2 What About Bob?
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Sheriff Carter and Allison investigate the disappearance of a scientist from a sealed biosphere. Meanwhile, "The Fixer" attempts to make Eureka's ventures more profitable.
Average Episode Rating: 4.0 | Air Date: 2008-08-05
- 3 Best in Faux
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The town's annual dog show gets into full swing complete with exploding robotic canines. Meanwhile, Sheriff Carter experiences an isolated earthquake, Zoe contemplates quitting the accelerated physics program, and Allison starts fitting her wedding dress.
Average Episode Rating: 4.0 | Air Date: 2008-08-12
- 4 I Do Over
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On Allison and Stark's wedding day, Sheriff Carter finds himself stuck in a time loop, causing him to experience the same lousy day over and over again. Meanwhile, Sheriff Carter's sister, Lexi visits Eureka.
Average Episode Rating: 4.0 | Air Date: 2008-08-19
- 5 Show Me the Mummy
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When an Egyptian tomb is opened at Global Dynamics, strange things start to happen, leading Fargo to believe it is the mummy's curse. The mummy, however, has disappeared, and Carter investigates.
Average Episode Rating: 4.0 | Air Date: 2008-08-26
- 6 Phased and Confused
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A mysterious "superhero" who can walk through walls is causing a ruckus in Eureka. Meanwhile, Zoe and her friends become stranded with Zane Donovan in an abandoned subterranean facility.
Average Episode Rating: 4.0 | Air Date: 2008-09-09
- 7 Here Come the Suns
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The town's mayoral race is disrupted when Zoe's science partner inadvertently causes a second sun to appear over Eureka.
Average Episode Rating: 4.0 | Air Date: 2008-09-16
- 8 From Fear to Eternity
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When a potentially world-altering scientific discovery from Eureka's past finally comes to light, can anyone be trusted with it? The question is far from rhetorical for Carter: Zoe's life is in immediate danger and Eva Thorne knows why.
Average Episode Rating: 3.3 | Air Date: 2008-09-23
- 9 Welcome Back Carter
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A new sheriff arrives in Eureka that turns out to be a robot that can change into human form (with mixed results). The town really needs the new sheriff as the town's gravity seems to be acting up.
Average Episode Rating: 3.0 | Air Date: 2009-07-10
- 10 Your Face or Mine?
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Deputy Lupo stands in as the acting sheriff while Carter undergoes his annual physical, but she's not acting like herself.
Average Episode Rating: 3.0 | Air Date: 2009-07-17
- 11 Insane in the P-Brane
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Tess Fontana (Jaime Ray Newman) shakes things up in Carter’s world when she’s brought in by Allison to re-open Section Five.
Average Episode Rating: 3.5 | Air Date: 2009-07-24
- 12 It Ain't Easy Being Green
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A bowling tournament brings a rival science team from Area 51 to town, leaving Carter investigating practical jokes that escalate in scope and destruction as the competition progresses.
Average Episode Rating: 3.5 | Air Date: 2009-07-31
- 13 If You Build It...
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Teenagers construct an odd building in a Eureka field while asleep.
Average Episode Rating: 3.3 | Air Date: 2009-08-07
- 14 Ship Happens
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Henry's 20-year-old project returns with more on board than it left with.
Average Episode Rating: 3.3 | Air Date: 2009-08-14
- 15 Shower the People
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Jack investigates the deaths of scientists who drowned in less than liquid circumstances. Meanwhile, Allison's baby shower goes green.
Average Episode Rating: 3.3 | Air Date: 2009-08-21
- 16 You Don't Know Jack
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It's a busy day for Global Dynamics and Eureka as Allison's labor begins during a sonic cleaning of the company, and the townspeople exhibit Alzheimer's disease at the same time.
Average Episode Rating: 2.7 | Air Date: 2009-08-28
- 17 Have an Ice Day
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Tess hopes her first day in charge of Global will be uneventful; the arrival of an Arctic ice core brings a new Ice Age to Eureka
Average Episode Rating: 3.3 | Air Date: 2009-09-11
- 18 What Goes Around Comes Around
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Zoe prepares to leave for college. Tess receives a job offer in Australia. A magnetic disturbance hovers above Eureka.
Average Episode Rating: 4.0 | Air Date: 2009-09-18