Eureka

After the Astraeus mission's launch to Titan, the crew manages to land the ship safely and find out they are back on Earth! What seemed like only a few hours was in fact a few years and the crewmembers have to re-adjust.

Carter, Henry, Kevin and the rest of the town continue to search for the missing Astraeus crew. Kevin's strangelet detector discovers the ship's trail! But where they are and who has been hiding them will be a shock to everyone.

The ship is finally found but the crew has been taken. When Carter is tasked with attempting to rescue the kidnapped crew by following them into the virtual Eureka, will he be able to get them out before their matrix world collapses for good?

With life back to normal, the Astraeus crew struggles to overcome their Matrix Eureka experience: what was real, what wasn't and what could become self-fulfilling prophecy.

The Astraeus crew must move forward after their matrix ordeal, but it isn't easy. And a return visit from DOD psychological assessor Warren Hughes just adds to the pressure.

To better protect against potential security breaches, Henry implements a disaster preparedness drill for Global Dynamics. But the real-life simulation proves a little too disastrous.

As the town of Eureka holds a memorial service for Holly Marten, Fargo and Zane secretly work to retrieve Holly's "consciousness" from the Matrix Eureka computer mainframe.

Allison and Carter's engagement hits rough waters when Carter's attempt at romance traps them at the bottom of Lake Archimedes in a leaking sub.

When Allison's genius older brother comes to meet her new husband, Carter feels the pressure of not being smart enough to measure up. But when his intelligence begins to suddenly grow exponentially, Allison has to find out why or risk losing the man she loves for good.

Carter's best-laid plans to give Allison a romantic honeymoon are thrown for a loop when their definitions of "romantic" differ... greatly. But there's more in the way of their relaxing getaway when saboteurs are uncovered in Eureka and the re-embodiment of Holly encounters some technical difficulties that could threaten her very existence -- virtual or otherwise.

When Grace's spying is revealed, mistrust is in the air. Major Shaw shows up to take control of the situation just as a geo-engineering project cuts off communications to the outside world.

The Smart Dust control unit is still on the fritz and wreaking havoc on the town's communications systems. The bio-printer has gone missing and Holly (Felicia Day) is definitely not herself.

The DOD is pulling the plug on Eureka. As our heroes grapple with saying good-bye, they have to work together one last time to stop the bizarre anomalies before their beloved town is turned inside-out.