Ep 2. A New World

In season 4 episode 2 of Eureka titled "A New World", the team in Eureka is faced with a mysterious situation when strange occurrences start happening around town. Objects are seen moving on their own and a strange energy field is disrupting electrical systems. Meanwhile, a man named Dr. Parrish arrives in town to study a newly discovered type of rock, but his work is hindered by the strange events taking place.

As the team investigates the source of the phenomenon, they discover that the energy field is creating a portal to a parallel universe. They soon realize that a group of Eureka citizens from the other universe have crossed over and are causing the disruptions. These citizens, who are their alternate selves, are confused and frightened by this new world they find themselves in and are desperate to find a way back home.

The team must work quickly to find a way to send the alternate citizens back to their own world before their presence causes irreversible damage to Eureka. They discover a way to open a portal to the other universe, but it requires a dangerous amount of energy. They turn to Dr. Parrish and his new rock for a solution.

In the end, the team successfully sends the alternate citizens back to their own world, but not without some unexpected consequences. Several members of the team experience unusual side effects from their interactions with their alternate selves, leaving them questioning what other changes may have occurred in their world.

Overall, season 4 episode 2 of Eureka is a thrilling and thought-provoking episode that explores the possibilities of alternate universes and the consequences of crossing paths with one's doppelgänger. The episode keeps viewers on the edge of their seats with its fast-paced action, unexpected twists, and deep exploration of the series' core themes of science, innovation, and the cost of progress.