In the Season 4 finale, Carter and Jo respond to a mysterious attack on the presidential convoy; good-byes are exchanged before the Astraeus mission is launched; and cosmic anomalies threaten Eureka.

Episode Viewers and Ratings

Season 4 Episode 20 of Eureka resulted in a 0.00 rating in the 18-49 demographic.

Eureka Season 4 Episodes...

• s04e00 - Do You See What I See
• s04e01 - Founder's Day
• s04e02 - A New World
• s04e03 - All the Rage
• s04e04 - The Story of O2
• s04e05 - Crossing Over
• s04e06 - Momstrosity
• s04e07 - Stoned
• s04e08 - The Ex-Files
• s04e09 - I'll Be Seeing You
• s04e10 - O' Little Town...
• s04e11 - Liftoff
• s04e12 - Reprise
• s04e13 - Glimpse
• s04e14 - Up in the Air
• s04e15 - Omega Girls
• s04e16 - Of Mites and Men
• s04e17 - Clash of the Titans
• s04e18 - This One Time at Space Camp…
• s04e19 - One Small Step
• s04e20 - One Giant Leap

Eureka Show Summary

For years, the government has been secretly relocating the world's geniuses (and their families) to the idyllic Pacific Northwest town of Eureka, where daily life straddles the line between unprecedented innovation and total chaos.

When U.S. Marshal Jack Carter wrecks his car and becomes stranded in Eureka, he quickly realizes that all is not what it seems. After the town's eccentric inhabitants unleash a brainchild with a catastrophic aftermath, Carter steps in to restore order and consequently is let in on one of our country's best-kept secrets.