It's a felony for a thriller to be a snooze fest and make the audience doze off instead of being at the edge of their seats. I fell asleep a couple of times during my viewing, so for me Monster kinda failed its purpose.

As a thriller, Monster failed to maintain its suspense throughout as the pacing was quite slow despite the fact that it clocked in less than 90 minutes. The scoring also didn't work for me, I just don't feel that it's thrilling enough to aid the pacing of the movie.

I don't mind the "no dialog" approach this movie took at all, I really just wish it were more suspenseful with faster pacing and more intense scoring perhaps?