Star Trek: Enterprise S04E11 "Observer Effect" - Star Trek Screencaps.com

When an away mission brings a deadly viral infection aboard Enterprise, Captain Archer, T’Pol, Trip Tucker, and the crew race to contain the disease and save the ship. Meanwhile, non-corporeal aliens covertly observe the crew’s responses and interactions, studying human behavior during the crisis. Dr. Phlox works to understand the virus as tensions rise, with the crew facing both the threat of the illness and the unseen presence monitoring their every move.

Observer Effect is Season 4, Episode 11 of Star Trek: Enterprise. Directed by Michael Vejar and written by Judith Reeves-Stevens and Garfield Reeves-Stevens, it originally aired on January 21, 2005. Browse thousands of high-quality screencaps, episode stills and HD screenshots from this episode.

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