Eureka

As Season Four begins, Carter and friends are mysteriously transported to a dangerous military installation. Getting home seems impossible, but whether they escape or not, their journey will have life-altering repercussions.

Carter and his fellow travelers begin to realize the startling implications of their return to Eureka -- and of Dr. Grant's unnerving appearance in their midst.

Wil Wheaton guest stars as Dr. Isaac Parrish, an underappreciated scientist whose hostility appears to have gone viral. Blind rage is infecting everyone at Global Dynamics with potentially catastrophic results -- especially for Fargo.

Directed by Colin Ferguson! Allison struggles to relate to her son and deals with inadvertent mayhem during Eureka's Space Week festival, while Carter wonders if the Zoe he is about to visit at Harvard will be the daughter he remembers. Jamie Kennedy guest stars!

Mysterious objects start popping up all over town, threatening to erase Eureka, and Carter (Colin Ferguson) needs the help of Claudia (guest star Allison Scagliotti) from Warehouse 13 to fix it before the present becomes history.

Allison accepts Carter's offer to include Kevin in a camping trip for some guy time, and Henry decides to level with Grace while a very peculiar -- and dangerous -- relationship threatens Eureka and the not-so-happy campers.

Romantic relationships are in flux. Zoe is home for a visit and hints at a new heartthrob. Henry is courting his wife while Dr. Grant and Carter spar over Allison. Jo, on the other hand, is done with love for now and just wants to get her house rebuilt. But that project is on hold because hunky paleo-anthropologist Dr. Derek Thurgood says he found ancient human remains at the site and refuses to allow the build to continue.

As Grace (Tembi Locke) finds a way to share her memories with Henry (Joe Morton), the rest of Eureka's citizens face the return of people from the recent - or not so recent - past.

Mid-Season Finale! Closer than they've ever been before, Allison (Salli Richardson-Whitfield) and Carter (Colin Ferguson) join forces personally as well as professionally when Jo (Erica Cerra) and Fargo (Neil Grayston) enlist them to help find a stolen Global Dynamics project.

Sheriff Carter relates a Christmas story in which the defensive field malfunctions trapping everyone in town for the holiday. So Fargo throws a big party, unaware that the town is shrinking. All from a quest for the perfect fruitcake.

An "only in Eureka" case of cold feet halts a wedding while a secret experiment precipitates an event that will completely alter life in the town.

When Eurekans start behaving oddly, Carter scours the town for a cause - never suspecting that Allison, miles from home, is the one facing real danger.

Carter and Jo try out Zane's new high-powered risk assessment system, but find that even it may not be a match for the dangerous level of competition among Eureka's scientists.

Carter must solve an only-in-Eureka bank robbery before the town floats away, while Allison deals with unsettling episodes of lost time.

It's all-out war when Beverly Barlowe incapacitates everyone in town except Jo and Zoe. The duo must outrun and outwit Beverly before she completes her plan - and without catching Allison in the crossfire. Series co-star Salli Richardson-Whitfield makes her directorial debut.

The Astraeus candidates endure psychological testing in deep isolation, not realizing that disaster looms just outside their door unless Allison can convince everyone, including herself, of her recovery.

As relationship issues plague the Astraeus team, a meddlesome Department of Defense auditor arrives to assess Jack and Allison's romance, and before long Eureka's atmosphere becomes toxic - literally.

As the Astraeus candidates undergo final interviews, Carter and Allison appeal the results of their relationship audit while trying to keep a lid on escalating mishaps around town.

Grace embraces an honor that strains her relationship with Henry while Deputy Andy becomes an accidental guinea pig for the Astraeus mission -- with catastrophic results.

As Season 4 ends, Carter must fight off a plague of the most destructive objects in the universe even as a shocking 11th-hour development threatens the Astraeus ship and its crew.

Sheriff Carter and Allison Blake are secretly planning the perfect holiday surprise for their kids, but a mysterious kaleidoscopic wave of color crashes over Eureka, leaving the entire town and its inhabitants animated.