Eureka - Season 4

The 60th anniversary of Eureka becomes life-changing in more ways than one when a marriage proposal is eclipsed by a mysterious transport to a military site and a new face in the crowd.

As the Founders' Day festivities continue, Carter and the others must accustom themselves to the new time line and how Dr. Grant fits into it. Unfortunately, reacclimatization needs to occur on a steep learning curve—"Tiny", one of Global Dynamic's projects, has run amok in the crowded town.

Dr. Isaac Parrish, the brilliant director of the Non-lethal Weapons Lab, is feeling a little undervalued these days. Then all his latent hostility goes viral, infecting everyone with such fury that no one is safe, especially Fargo.

As Eureka celebrates Space Week, Dr. Ramsey unveils his cutting edge invention that could allow colonization of Mars. Unfortunately, a slight malfunction may cause it to incinerate Eureka before the dream is realized. Equally bad is that Eureka's go-to guy for crisis intervention has just gone to Boston to visit his daughter at Harvard.

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.

Carter's camping trip with Kevin becomes a little scarier than ghost stories by the camp fire when a malfunction with the AI at Global Dynamics may turn some of them deadly. Elsewhere, Henry thinks about telling Grace the truth.

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.

Just as Carter and Allison seem to get everything right, people from their pasts appear to complicate things. Elsewhere, GD's new project perks the interest of Beverly Barlowe.

After the D.E.D. device disappears, Carter, Jo, Fargo and Allison find themselves in a déjà vu situation as their investigation puts Trevor Grant right at the top of the suspect list. The proverbial noose around his neck only tightens when they discover evidence that connects him to Beverly Barlowe, and her motive will put at risk everything they have struggled to achieve.

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.

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.

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.

Lenses that predict security breaches are eagerly embraced by Jo, but not so much by Carter. Although he can't argue their importance after they both see the end of Eureka in one ghastly projected leap forward. Elsewhere, Fargo and Dr. Marten screen the hundreds of scientists who responded to Fargo's announcement of 20 open positions on the Astraeus Mission.

Carter 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.

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.

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.

Preparations for the Titan mission have the unintended consequence of turning the local Eureka environment into Titan's. Meanwhile, Eureka couples struggle to come to terms with each other and the DoD sends an investigator to evaluate Jack and Allison's relationship.

Attacks in town may scuttle the Astraeus mission in the same week the final 20 will be named. Carter and Allison appeal the auditor's recommendation, but the proposed fix, a memory-reading gadget for the candidates' final interviews may give them more details about each other than desired.

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.

The Astraeus participants make their farewells to their earthbound family and friends. Elsewhere, Carter and Jo investigate the person—or thing—which attacked the presidential convoy and if it is in any way related to the cosmic anomalies threatening Eureka.