Season 3, Episode 16 You Don't Know Jack

First Aired: August 28, 2009

A sonic cleaning at Global Dynamics coincides with a phenomenon that causes Eureka's citizens to develop a communal form of Alzheimer's. Meanwhile, Allison goes into labor in the third-season finale.

Watch Now
Paid

Guest Cast

Cast & Details See all »

  • Premiered: July 18, 2006
  • Rating: TV-14
  • Premise: Geniuses inhabit a top-secret town in the Pacific Northwest, producing innovations and, sometimes, perilous situations in this quirky sci-fi series. (more)

Show More »

Trending TonightSee all »

Watch This

Tyler Blackburn and Ashley Benson, <em>Pretty Little Liars</em>
Pretty Little Liars: Tyler Blackburn Is Ready for a Haleb Wedding

The Pretty Little Liars actor says Caleb is ready to tie the knot with Hanna