Season 2, Episode 10 Grey Matters

First Aired: December 10, 2009

During the investigation of strange circumstances surrounding brain surgeries at a mental hospital, Olivia finds a reason to believe the leader of the shape-shifters may have something to do with it. Leonard Nimoy guest stars as William Bell.

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  • Premiered: September 9, 2008
  • Rating: TV-14
  • User Rating:4.73 out of 5 (5,450 ratings)
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  • Premise: A drama with sci-fi elements following the FBI probe of mysterious deaths aboard an airplane that landed at Boston's Logan Airport. But the deaths aboard Flight 627 are only the beginning of the story. Executive producers include J.J. Abrams ('Lost') and h… (more)

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