As of July 2026, Eureka Season 4 aired in 2010 with 21 episodes. Full episode guide and where to watch below.
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Eureka Season 4

2010 21 Episodes Sci-Fi & Fantasy · Comedy ⭐ 8/10

Eureka Season 4 is currently streaming on major platforms, and it delivers exactly the kind of comedy that earns a loyal following. A compact run that never overstays its welcome. 723 viewers have already rated it on TMDB — the kind of consensus that does not happen by accident. Colin Ferguson leads a cast with real comic timing. There is no real reason to keep putting it off.

Whatever else is competing for your attention this week, Eureka Season 4 is worth clearing space for. The jokes in Eureka Season 4 land because the characters underneath them are worth caring about. The fourth 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. Colin Ferguson and Salli Richardson-Whitfield lead a cast that brings real weight to the material. It was aired in 2010. The timing in Eureka Season 4 is precise enough that even the throwaway lines land on a second watch. The hit rate here is high enough that skipping ahead never feels like an option.

If you need a comedy that actually makes you laugh, Eureka Season 4 is a strong candidate. If you have run out of similar titles to watch, this is a strong next pick. Best experienced as a single, sustained watch if your schedule allows. Colin Ferguson's comic timing carries it through its weaker moments. The kind of comedy you recommend to someone who claims they do not watch much.

📡 Where to Watch Eureka Season 4

Not currently available on major streaming platforms. Check back soon.

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🎬 Eureka Season 4 — Episode Guide

E1
Founder's Day
2010-07-09
It's Founder's Day in Eureka and everyone is in the spirit of the celebration until Jack, Allison, Henry, Jo and Fargo are transported back to 1947 where they meet some familiar faces along the way. Will they be able to get back to 2010 or will they be stuck forever in 1947 where Eureka is not a tow...
E2
A New World
2010-07-16
When the 5 get back to their time, things are changed everywhere. As Henry tries to fix the machine that transported them in the first place, Dr. Grant is making himself as comfortable as he can. Jack is still trying to wrap his mind around the fact that he asked Tess something that she says yes to ...
E3
All the Rage
2010-07-23
When a prototype sets everyone into bad temper mode, the issue escalates and gets worse beyond the control of what Jack can handle. As Jack and Allison and Tess are the only sane people at Global Dynamics they have to devise a plan that will make everything calm and happy again. Meanwhile, Henry is ...
E4
The Story of O2
2010-07-30
It's space week in Eureka, and everyone is gearing up for the rocket race - except for Carter. General Mansfield is in town for the big Race to the Moon, and is debriefed on a new oxygen-generating fluid designed, called TAP, for colonizing Mars. When the question about someone using TAP to fuel the...
E5
Crossing Over
2010-08-06
Claudia Donovan visits Eureka to see if Fargo's promises of wondrous devices are true, but she finds herself in the middle of a mystery suitable for Warehouse 13 when objects begin to appear randomly around the town and GD, and it must be solved before there are deadly consequences.
E6
Momstrosity
2010-08-13
When Sara gives Andy a (as Zane calls it ) an EMO download to give him emotion, she inadvertently affects all Level 6 AIs. Including Tiny. She escapes while being transported to NASA and is on the loose. Meanwhile, Jack takes Kevin camping with Fargo and Grant and Jack is not happy that Grant is th...
E7
Stoned
2010-08-20
Love is in the air as Carter gets fed up with Grant's pursuit of Allison, Zoe conceals her love and Henry courts Grace. But all the emotions may have to be put on simmer when people in town start turning to stone.
E8
The Ex-Files
2010-08-27
Eureka's citizens face the return of people from the past; Global Dynamics tests a new device.
E9
I'll Be Seeing You
2010-09-10
When Grant and Carter become stranded, they must race back in time to save Eureka.
E10
O Little Town
2010-12-07
Carter can't get into the Christmas spirit especially with the town surrounded by a force-field. Fargo organizes the GD holiday party, and Allison is full of holiday cheer.
E11
Lift Off
2011-07-11
Zane pesters Jo for details she does not want to reveal. Carter problem-solves at Andy and S.A.R.A.H.'s wedding. Elsewhere, Zane's actions make him and Fargo unexpectedly airborne.
E12
Reprise
2011-07-18
Carter's duties expand to babysitting when Allison attends a medical conference, and Fargo finds his groove when a certain song is played. Meanwhile, a rocket scientist appears at Café Diem.
E13
Glimpse
2011-07-25
Jo receives a technical boost to her crime-fighting ability with lenses that predict security breaches. Allison's headaches won't go away so Carter plans a vacation. Fargo, meanwhile, deals with an onslaught of volunteers when he announces a space mission with room for civilians.
E14
Up in the Air
2011-08-01
Jack deals with a bank robbery which may relate to the sudden gravity issues besetting the citizens of Eureka. Meanwhile, Fargo's rivalry with Isaac Parrish is boosted when he learns Holly and Parrish went on a date.
E15
Omega Girls
2011-08-08
When Zoe comes home for a visit, Jo faces an angry woman who doesn't accept her fumbling explanations about Zane. This all fades to background noise, however, when they find everyone in Eureka unconscious and must find a way to work together so they can revive the town and beat Beverly before she ge...
E16
Of Mites and Men
2011-08-15
When mites threaten to take down Global Dynamics, Jack is called into action since Jo is in the middle of training. Allison is struggling with the fact that everyone things that her brain doesn't work and she is determined to prove that she is back in action again. 
E17
Clash of the Titans
2011-08-22
The Eureka atmosphere becomes toxic when Department of Defense auditor comes to assess the team's relationships.
E18
This One Time at Space Camp...
2011-08-29
The Astraeus candidates go through their final interviews while Carter and Allison appeal their relationship audit.
E19
One Small Step...
2011-09-12
When an explosion in the Astraeus lab accidentally sends Andy to Titan the team must devise a plan to save him before it's too late! Eureka
E20
One Giant Leap...
2011-09-19
In the season finale - It's chaos in Eureka when an energy beam rips through main street but the Astraeus launch must go on...with or without Eureka intact.

🎭 Cast of Eureka Season 4

Colin Ferguson
Colin Ferguson
Jack Carter
Salli Richardson-Whitfield
Salli Richardson-Whitfield
Allison Blake
Joe Morton
Joe Morton
Henry Deacon
Erica Cerra
Erica Cerra
Jo Lupo
Neil Grayston
Neil Grayston
Douglas Fargo
Niall Matter
Niall Matter
Zane Donovan

📋 All Seasons of Eureka

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