Mel Gibson plays a neurotic New York cabbie who's consumed by wild conspiracy theories and their implications in this uneven action thriller from director Richard Donner. It's the newsletter Gibson produces that suddenly intensifies interest in him from ominous parties such as creepy Patrick Stewart, who may work for the CIA. But that's only the half of it, because when he turns to Justice Department attorney Julia Roberts for help, the Manchurian Candidate-like plot takes off. Donner glosses over the improbabilities with his usual considerable style and bravura, and Gibson and Roberts make an engaging team, but the uneasy combination of light laughs and unsavoury darkness eventually conspires against them. Conspiracy theorists will love it, though.

A man obsessed with conspiracy theories becomes a target after one of his theories turns out to be true. Unfortunately, in order to save himself, he has to figure out which theory it is.