Eureka

The lost Astraeus crew returns; the crew realizes they have been on a four-year journey and now everyone is faced with a very new reality.

A month has passed and the town continues searching for the missing Astraeus crew.

The ship is found but the crew has been taken; help arrives by an unexpected and dangerous visitor.

The Astraeus crew tries to overcome their Matrix Eureka experience; Fargo struggles with Holly's death; old animosities erupt as Parrish's latest project threatens to ignite the town.

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

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

The town of Eureka holds a memorial service, Fargo and Zane work to retrieve Holly's consciousness from the Matrix Eureka computer mainframe; strange hauntings begin to happen at GD.

Allison and Carter's engagement hits rough waters; Allison and Carter become trapped in a leaky sub at the bottom of a lake.

Carter meets Allison's genius older brother; Carter's intelligence begins to suddenly grow; Allison tries to find out why.

Carter tries to give Allison a romantic honeymoon; saboteurs are uncovered in Eureka; Holly encounters some technical difficulties that could threaten her existence.

Grace's spying is exposed. Major Shaw appears to gain control of the situation.

The Smart Dust control unit is not working, wreaking havoc on communications systems; the bio-printer is nowhere to be found; Holly is not herself.

Carter must save the town after wormholes begin appearing and threaten to tear Eureka apart.