A deadly water moccasin and an equally deadly trapper add up to peril for Longstreet and Duke, whose trek into the Louisiana bayous turns into a battle for survival.
To prevent Mike from identifying the voice of a murderer in court, he is put through an ordeal where he is kidnapped, drugged with a hallucinogen, and left alone on a deserted ship.
Insurance investigator Michael Longstreet is a man tormented by the loss of his wife — and eyesight — in an unexplained bombing. Longstreet enrolls at a clinic for the blind, struggling to sharpen his remaining senses to find the bomber.