Starts out OK, then...
...straight into the crapper with a mess of an ending.
So many plot holes.
So many unexplained or implausible jumps in logic.
So many changes in tone.
**SPOILERS***
The shooting of the intruder, and the effects on the family, was fascinating. The stalker father was at first terrifying.
But then, the whole thing falls apart. I'm still not sure why the cops were motivated to fake the identity of the deceased burglar. Don Johnson's detective character just appears and his wise-cracking comedy is completely out-of-sync with the rest of the film. The massacre at the end was totally unnecessary and accomplished nothing. And as another poster points out, what possible motive did the Michael C. Hall have to participate? He just goes back to his wife and kid at the end -- ear half gone and all -- as though everything is fine and he will never be caught? Ridiculous. And the bad guys -- SNUFF FILMS, for God's sake! What a sleazy, tired, lazy old movie cliche.
Four stars out of ten only because of some good violence.