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 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.
Written by Sophie and last updated on feb 04, 2023.
PS: The following content contains spoilers!
PPS: I will admit that parts of this page was written with the help of AI - it makes my work so much easier to not start from a blank page!
Carter's romantic surprise for Allison turns deadly when they're trapped in a sinking marine lab with time and oxygen quickly running out.
The episode was rated 7.91 from 510 votes.
Fargo is convinced that Holly is still inside of the Matrix computer, but the DOD is determined to wipe its hard drive clean -- losing Dr. Marten forever.
The episode was rated 7.95 from 511 votes.
When a smart fire experiment gets out of control, Carter and team discover that the Astraeus victims may be the cause. Meanwhile, Fargo deals with Holly's death, Grace struggles to maintain her relationship with Henry, and Allison fights her feelings about Jo.
The episode was rated 8.00 from 511 votes.
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.
The episode was rated 8.03 from 503 votes.
Jack and Allison's perfect honeymoon is interrupted when sabotage is discovered in Eureka. Elsewhere, Holly faces another hurdle to remain intact.
The episode was rated 8.04 from 495 votes.
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.
The episode was rated 8.05 from 517 votes.
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.
The episode was rated 8.11 from 502 votes.
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.
The episode was rated 8.16 from 539 votes.
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.
The episode was rated 8.25 from 533 votes.
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.
The episode was rated 8.28 from 535 votes.
The Astraeus crew returns to Eureka four years later and must adapt to a myriad of changes, including a more oppressive version of Deputy Andy.
The episode was rated 8.32 from 572 votes.
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.
The episode was rated 8.36 from 528 votes.
In the series finale, wormholes randomly materialize around Eureka as the Department of Defense is set to shut the town.
The episode was rated 8.45 from 555 votes.
