When a potentially world-altering scientific discovery from Eureka’s past finally comes to light, can anyone be trusted with it? The question is far from rhetorical for Carter: Zoe’s life is in immediate danger and Eva Thorne knows why.
The team investigates a bus full of dead commuters that appear to be fossilized and uncover a man who has visions of pattern-related disturbances before they happen; Dr. Bishop requests a piano in the lab to help him process data.
Self locates another card hidden in a safe within a secure federal building, as Mahone continues his quest for revenge. Meanwhile, T-Bag’s new life may be in jeopardy.
Sylar goes to the Company and inadvertently releases 12 super-powered criminals in a fight with Elle. Future Peter tries to fix his mistake. Angela takes over the company. Claire learns more about her powers. Hiro and Ando travel to Paris to track down the speedster who robbed them. Maya discovers that Mohinder’s injection has changed him. Matt meats Usutu, an African with a familiar power.
After a look into the future, Nathan’s shooter is revealed. Matt chases him and winds up in a desert. Hiro receives an important message from his father. Sylar visits Claire. Maya gives Mohinder an idea for his research. Nathan recovers and gets a visit from Linderman.
Ted and Stella get engaged, but Ted soon learns that he doesn’t know anything about her. Meanwhile, Barney confesses to Lily that he’s in love with Robin.
Ronon and McKay join Dr. Keller on an off-world errand of mercy, and must track her through the forest when a Runner kidnaps her.
The town’s mayoral race is disrupted when Zoe’s science partner inadvertently causes a second sun to appear over Eureka.
Olivia, along with Peter and Walter Bishop, investigates the strange death of a woman who had an even stranger child. The woman was pregnant for only hours, yet the baby she birthed was fully developed – and also aged eighty years in the span of a few minutes. Olivia asks Nina Sharp of Massive Dynamic for help.
Michael and the others track another cardholder to a consulate. T-Bag arrives in LA and runs into Michael and Lincoln. Wyatt also makes it to LA, in an effort to locate Sara. Bruce’s body is discovered.