<P> Nick agrees to bring Matty to a meeting in a cemetery . There he uses a decoy boy to distract Libby, knocks her unconscious, and locks her in a casket inside a mausoleum . Using a . 38 caliber handgun she had snatched from Lehman, Libby manages to shoot the hinges off the lid of the casket and escape the mausoleum by throwing a flower vase through a stained glass window . </P> <P> While tracking Libby in New Orleans, Lehman himself becomes suspicious of Nick's death and begins to believe Libby's story, based on the clues uncovered in his search . He finds a picture of a different Nicholas Parsons when searching the Washington State DMV records to prove his suspicions, and later confirms them when he uncovers six DMV records under that name, including Nick's DMV application and photograph . After intercepting and capturing Libby later in the city as she makes her way to Nick's hotel, the two end teaming up . </P> <P> Lehman visits Nick in his office under the pretense of asking for money to keep his identity secret . He records a remark by Nick that he had murdered his wife, the only witness to his true past, and then Libby enters, holding Nick at gunpoint . Nick is given a choice of surrendering to the authorities or getting shot by his vengeful wife, who he believes would go free for this deed because of double jeopardy . Nick pulls out a hidden gun, shoots Lehman, and fires away at Libby . Lehman manages to bring Nick down before he can shoot Libby . Nick gets the upper hand in the scuffle, but before he can kill the wounded parole officer, Libby shoots Nick dead . </P> <P> Lehman promises to help Libby get fully pardoned, and together they travel to Matty's boarding school in Georgia . Matty (Spencer Treat Clark), now eleven years old, recognizes his mother, and they embrace with Lehman watching them . </P>

Is the movie double jeopardy based on a book