Season two opens with Olivia’s shocking return from the perplexing alternate reality, while Peter is unknowingly in a race against time with an ominous mobile force pursuing information about Olivia’s visit.
Walter reenters the lab to cook up some fringe science and of course, some custard for Peter’s Birthday.
After receiving word that her father is dying, Myka travels home to see her parents.
Tess hopes her first day in charge of Global will be uneventful; the arrival of an Arctic ice core brings a new Ice Age to Eureka
Artie gets questioned by the Regents and Mrs. Frederic. Meanwhile, Pete, Myka and Claudia become trapped inside Warehouse 13, where a dangerous predicament unfolds.
Uncle Teddy appears surprisingly stoic after a staggering personal loss, but finally bursts at the seams and has the gang cornered. Janet and Sheila's plan goes haywire and leaves a trail of destruction in its wake.
Pete and Myka visit a Florida prison to probe a spate of unexplained suicides. Meanwhile, Claudia changes a light bulb with the help of an artifact.
It’s a busy day for Global Dynamics and Eureka as Allison’s labor begins during a sonic cleaning of the company, and the townspeople exhibit Alzheimer’s disease at the same time.
Franco steps into the ring with one of Carla's friends;Tommy tends bar after a failed rescue leaves the crew in the dumps.
Pete and Myka go to Las Vegas to fetch an artifact that is helping a couple of gamblers, but the mission goes awry when Myka becomes trapped in a famous author’s mirror.
Jack investigates the deaths of scientists who drowned in less than liquid circumstances. Meanwhile, Allison’s baby shower goes green.