$7.5 million of the budget came from the state of New Mexico through an interest-free loan. In return, the state will get 2.5% of the box office, until it makes $90 million or over, at which point they will get 3% of the gross.
Sylvester Stallone, Tom Cruise and Ben Affleck were all said to have expressed interest in appearing in the project in the late 1990s. Cruise eventually took up a position as producer on the project instead, but he asked to have his name removed from the credits just prior to release.
The script came to Carrie-Anne Moss a couple of weeks after she heard about 'remote viewing' on The Oprah Winfrey Show (1986). Since this movie is based on this subject, she said that she took it as a sign.
The original 1995 draft by Zak Penn circulated around Hollywood for seven years before finally being made. After several drafts were rejected, the original draft, with several revisions by Billy Ray, was used for shooting.
The trivia items below may give away important plot points.
At the end, Mackelway tells O'Ryan that killing the "suspect zero" pedophile will not rid the world of evil, that there are thousands of more such deviants out in the world and O'Ryan looks shocked/dismayed. The whole gist is an allusion to the novel "Moby Dick" when Captain Ahab is obsessively convinced that killing the white whale will rid the world of evil. This allusion also explains the repeated references to hunting a giant fish in the movie.
The final scene features an overhead shot of Mackleway holding O'Ryan's body at the center of a Fibonacci spiral made of stones; this scene echoes O'Ryan's drawing of the black hole which Mackleway found hidden behind the wallpaper of the former's room. The image suggests the fate into which O'Ryan believes both he and Mackleway have been sucked.