Instinct (1999)

"Nothing is more savage than civilization."
TMDb Score
In a prison for the criminally insane, deranged anthropologist Ethan Powell is set to be examined by a bright young psychiatrist, Theo Caulder. Driven by ambition and a hunger for the truth, Caulder will eventually risk everything—even put his very life on the line—in a harrowing attempt to understand the bizarre actions of this madman.
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Movie Details

Theatrical Release:June 4th, 1999
On DVD & Blu-ray:November 16th, 1999 - Buy DVD
Original Language:English
Production Companies:Spyglass Entertainment, Touchstone Pictures
Movie Tags:murder, prison, gorilla