Air date: 2012-04-16

Runtime: 43 min

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.

Air date: 2012-04-23

Runtime: 43 min

The town huddles in a last attempt to locate the vanished Astraeus before it's too late!

Air date: 2012-04-30

Runtime: 43 min

Beverly Barlowe resurfaces in Eureka seeking Carter's help to free the Astraeus crew, and the rescue plan lands Carter in the crew's virtual world.

Air date: 2012-05-07

Runtime: 43 min

When a smart fire experiment gets out of control, Carter and team discover that the Astraeus victims may be the cause.

Air date: 2012-05-14

Runtime: 43 min

The crew moves forward after an ordeal and Warren's visit adds to the pressure.

Air date: 2012-05-21

Runtime: 43 min

Henry conducts a preparedness drill that winds up a disaster and Fargo faces a hard reality.

Air date: 2012-06-04

Runtime: 43 min

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.

Air date: 2012-06-11

Runtime: 43 min

Carter's romantic surprise for Allison turns deadly when they're trapped in a sinking marine lab with time and oxygen quickly running out.

Air date: 2012-06-18

Runtime: 43 min

When Allison's genius older brother comes to meet her new husband, Carter feels the pressure of not being smart enough to measure up.

Air date: 2012-06-25

Runtime: 43 min

Jack and Allison's perfect honeymoon is interrupted when sabotage is discovered in Eureka. Elsewhere, Holly faces another hurdle to remain intact.

Air date: 2012-07-02

Runtime: 43 min

Eureka is cut off from the world by a malfunctioning experiment that threatens to eradicate the town's populace.

Air date: 2012-07-09

Runtime: 43 min

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.

Air date: 2012-07-16

Runtime: 43 min

Wormholes randomly materialize around Eureka as the Department of Defense is set to shut the town.