List of Eureka episodes

The following is a list of episodes for the American science fiction drama Eureka which consisted of 77 episodes aired over five seasons. In addition to the regularly televised episodes, there is a short webisode series called "Hide and Seek", which is available on Syfy's Eureka homepage.

The episodes in the first season were not aired in the order intended by the show's creators. Thus, there are some small inconsistencies, but such inconsistencies are minimal and were intentionally controlled. In podcast commentaries, the show's creators and star Colin Ferguson confirmed that the production order was in fact the order in which they intended the show to air, but the network executives changed the order to try to place stronger episodes earlier in the run to help attract viewers.

The creators were able to make minor changes in editing and sometimes dubbed dialogue in later episodes (for instance, they removed the explicit mention of Zoe's first day at school) to minimize audience confusion.

While transporting his delinquent daughter back to Los Angeles, U.S. Marshal Jack Carter crashes his car near Eureka. There, he assists in a case involving a tachyon accelerator. The town begins to experience time and space anomalies, a child is nearly killed, and a herd of cows is lost. When Carter investigates these incidents, Jim Taggart kidnaps him and Carter meets Allison Blake, who shows him Global Dynamics (GD) and the real side of Eureka. The accelerator is eventually found, and the scientist who built it dies trying to shut it off, and the military comes in and quarantines the town.

The rift caused by the tachyon accelerator can be stopped if another particle collision can occur, but a large quantum physics problem must be solved (half of it went missing while the anomalies occurred all over town). With the help of Jo the deputy, Carter sneaks out of the heavily guarded GD and grabs Allison's autistic son, who solves the problem, another collision occurs, and Eureka—and Earth—is saved. In the end, Carter gets a promotion like he wanted, but just not the one he expected: he becomes the new sheriff of Eureka after the old one retires.

...
Wikipedia