The BEST Episodes of Eureka
Every episode ever - ranked by fan votes!
Last Updated: Feb 2, 2021
Network: Syfy
The sleepy Pacific Northwest town of Eureka is hiding a mysterious secret. The government has been relocating the world’s geniuses and their families to this rustic town for years where innovation and chaos have lived hand in hand. U.S. Marshal Jack Carter (Colin Ferguson) stumbles upon this odd town after wrecking his car and becoming stranded there. When the denizens of the town unleash an unknown scientific creation, Carter jumps in to try to restore order and consequently learns of one of the country’s best kept secrets.
#1 - One Giant Leap...
Season 4 - Episode 20 - Aired Sep 19, 2011
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.
8.22 
#2 - Just Another Day
Season 5 - Episode 13 - Aired Jul 16, 2012
In the series finale, wormholes randomly materialize around Eureka as the Department of Defense is set to shut the town.
8.17 
#3 - Founder's Day
Season 4 - Episode 1 - Aired Jul 9, 2010
Dr. Grant, a former resident of the town, causes serious alarm with his unexpected return. His romantic interest in Allison Blake also causes significant friction with Sheriff Jack Carter.
7.93 
#4 - The Real Thing
Season 5 - Episode 2 - Aired Apr 23, 2012
Carter and Andy are jailed for trying to steal a piece of equipment to complete a device that Kevin has assembled to search for the Astraeus crew. Meanwhile, Holly comes up with a dangerous theory.
7.88 
#5 - Force Quit
Season 5 - Episode 3 - Aired Apr 30, 2012
Carter and Jo continue their search for the missing Astraeus crew. A surprising source confirms the new theory of the disaster, and offers to help them rescue the crew. Meanwhile, back at the lab, lives are at risk as more of the crew comes closer to the truth of their situation.
7.87 
#6 - Smarter Carter
Season 5 - Episode 9 - Aired Jun 18, 2012
While under the influence of a smart drug, Carter becomes a genius like everyone else in town and starts to change the laws of physics. Unfortunately, his condition soon endangers all of Eureka, including Allison's brother who is in town just to meet his new brother-in-law.
7.86 
#7 - Double Take
Season 5 - Episode 12 - Aired Jul 9, 2012
The people of Eureka are being kidnapped and replaced by body-doubles one by one unless Allison, Fargo and Zane can figure out how to avoid capture and save their town.
7.86 
#8 - Pilot
Season 1 - Episode 1 - Aired Jul 18, 2006
After a strange accident sidelines Eureka's sheriff, U.S. Marshal Jack Carter takes over the investigation into the mysterious phenomenon that led to the death of a resident. Carter learns about the secret purpose of the town while trying to re-establish a connection with his angry and bitter daughter, Zoe. He develops a friendly working relationship with government liaison Allison Blake and meets some of the more eccentric residents of Eureka.
7.86 
#9 - Lift Off
Season 4 - Episode 11 - Aired Jul 11, 2011
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.
7.85 
#10 - Up in the Air
Season 4 - Episode 14 - Aired Aug 1, 2011
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.
7.85 
#11 - Of Mites and Men
Season 4 - Episode 16 - Aired Aug 15, 2011
Global Dynamics deals with two threats—a visit from Senator Wen and robotic bugs that can consume everything—it's unclear which is the bigger one. Meanwhile, Allison refuses to acknowledge any deficit with which the implants may have left her. SYFY has this & "Omega Girls" Listed as episode 16 and does not have #17 "Clash of the Titans Listed"
7.84 
#12 - Glimpse
Season 4 - Episode 13 - Aired Jul 25, 2011
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.
7.83 
#13 - If You Build It...
Season 3 - Episode 13 - Aired Aug 7, 2009
Teenagers construct an odd building in a Eureka field while asleep.
7.83 
#14 - Jack of All Trades
Season 5 - Episode 5 - Aired May 14, 2012
Jack starts to swap bodies uncontrollably, which puts both his body and his consciousness in awkward situations. Meanwhile, Warren Hughes returns to GD to evaluate Astraeus crew members' reactions to their abductions. Elsewhere, Zane's quest for answers from the Matrix reveals disturbing results for both him and Fargo.
7.78 
#15 - The Honeymooners
Season 5 - Episode 10 - Aired Jun 25, 2012
Jack and Allison's perfect honeymoon is interrupted when sabotage is discovered in Eureka. Elsewhere, Holly faces another hurdle to remain intact.
7.76 
#16 - Omega Girls
Season 4 - Episode 15 - Aired Aug 8, 2011
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 gets hold of valuable data. SYFY has this & "Of Mites and Men" Listed as episode 16 and does not have #17 "Clash of the Titans Listed"
7.76 
#17 - Mirror, Mirror
Season 5 - Episode 11 - Aired Jul 2, 2012
The Department of Justice arrives to investigate Grace, while Henry struggles with his conscience and Eureka is cut off from the world by a malfunctioning experiment that threatens to eradicate the town's populace.
7.75 
#18 - Worst Case Scenario
Season 5 - Episode 6 - Aired May 21, 2012
It's disaster drill day at GD and everyone must participate in order to see how well they would do in a disaster. Unfortunately the computer conducting the drill makes the simulation a reality. Elsewhere, Fargo undergoes risky interfaces with the Matrix to confirm Zane's findings.
7.75 
#19 - Dr. Nobel
Season 1 - Episode 6 - Aired Aug 22, 2006
After Fargo and Spencer accidentally activate a doomsday device, Carter must help Dr. Irwin Thatcher, an aging scientist, to shut down the device.
7.75 
#20 - Reprise
Season 4 - Episode 12 - Aired Jul 18, 2011
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.
7.75 
#21 - This One Time at Space Camp...
Season 4 - Episode 18 - Aired Aug 29, 2011
The Astraeus candidates go through their final interviews while Carter and Allison appeal their relationship audit.
7.75 
#22 - One Small Step...
Season 4 - Episode 19 - Aired Sep 12, 2011
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
7.74 
#23 - Noche de Sueños
Season 2 - Episode 6 - Aired Aug 14, 2007
A toxic spill seems to cause Eureka's residents to share their dreams. Initially the situation is amusing, but turns dire after the dream sharing is discovered to have a lethal attribute. The situation becomes more complicated, when Carter finds out that the spill is not the cause.
7.73 
#24 - Ship Happens
Season 3 - Episode 14 - Aired Aug 14, 2009
Henry's 20-year-old project returns with more on board than it left with.
7.73 
#25 - I'll Be Seeing You
Season 4 - Episode 9 - Aired Sep 10, 2010
Dr. Grant attempts to return to 1947 but when Carter intrudes, they both wind up stuck in the past under the threat of altering present-day Eureka once again.
7.73