Season 1

August 1, 2006

Something starts to steal the townspeople's memory...

August 8, 2006

After hosting a movie party, Spencer is found the next day in the middle of a crop circle, claiming he was abducted by aliens; and then other people who attended the party start to go missing as well. Elsewhere, the legislator responsible for Eureka's funding visits the town, and gets dragged into a Sector 5 experiment...

August 15, 2006

An unpredictable researcher accidentally unleashes a dangerous artifact which was previously hidden by Nathan Stark.

August 22, 2006

A sleeping weapons system is accidentally awakened by Fargo and Spencer. Henry tries to avert the pending catastrophe with the help of a retired, nonsensical scientist.

August 29, 2006

Carter investigates an unusual car accident. Meanwhile, Stark, under the stress of completing a project on time, pressures two research teams to produce results.

September 5, 2006

A former resident returns to Eureka and creates mayhem which threatens Global Dynamics, prompting Stark to take action.

September 12, 2006

Taggart achieves a medical breakthrough while Fargo invents a device that bridges the divide between computers and human brains.

September 19, 2006

Strange behavior exhibited by the townspeople is investigated by Carter,who has to solve the mystery before Stark makes a decision that could affect the world.

September 26, 2006

A bad day in the lab forces Carter to rethink his decision to live in Eureka, prompting an intervention from S.A.R.A.H. (the self Activated Residential Automated Habitat.

October 3, 2006

Ambition trumps common sense when Stark is given a chance to try out the Top-secret artifact. Once it's tested, Eureka warps into the future and ends up in 2010, where the town is different.