Mel Gibson plays a Boston detective named Thomas Craven whose daughter is brutally slain in front of his eyes, inexplicably. She was a young, successful, and idealistic nuclear engineer with a degree from MIT, working in a think-tank-type company in rural Massachusetts.
First Craven thinks he was the target, a plausible assumption being a detective. But as he digs into the details, he not only unravels sinister deeds but also attracts increasingly brutal attacks on all the people around him. It seems like the universe is out to eliminate everyone around him.
This is a story about corporate America at its worst. A seemingly successful company is unmasked as a criminal enterprise. Politicians are bought, police is corrupt and killers can drive the streets and do their dirty deeds unhindered.
There is no great moral lesson here. Edge of Darkness is good entertainment, that’s all. Gibson does a great job as “the guy who’s got nothing to lose and doesn’t give a shit,” as he tells a corrupt lawyer who tries to brush him off. He is a good cop and we root for him as he takes down all the bad guys, one at a time.
[Addendum] After reading Eric P’s comment below it becomes clear that I didn’t give a solid reason why somebody would want to see this movie — or not. So check the ratings key on the page “Ratings Key” above.