Myka and Pete deal with a plague of zombies in Ithaca, while Claudia deals with a new romance, a prophecy of death, and a rejection from a friend.

In the season finale – It’s chaos in Eureka when an energy beam rips through main street but the Astraeus launch must go on…with or without Eureka intact.

Walt’s family worries when he doesn’t turn up for Walter, Jr.’s 16th birthday. Jesse is forced to put his lab skills to the test without Mr. White’s help.

While Pete and his mother Jane try to determine the origins of their mysterious opponents, Myka and Claudia travel to Portland to stop a girl who can apparently vaporize anyone she hates with blasts of radiation.

When an explosion in the Astraeus lab accidentally sends Andy to Titan the team must devise a plan to save him before it’s too late! Eureka

Skyler’s past mistakes come back to haunt her. Gus takes action to thwart his rivals. Jesse seeks Walt’s help, with mixed results.

Harvey’s efforts to free an innocent man hit a wall when he goes against the new district attorney, who seems more focused on the integrity of the system than justice.

Skyler develops an unusual solution to her money troubles. Hank enlists Walt to investigate a theory. Walt’s impatience with Jesse grows.

Harvey’s former mentor turns to him for help when his office comes under investigation. Meanwhile, Jenny suspects Mike may be occupied with more than just his job.