Peter Sarsgaard in Orphan. My guy has all the evidence, every reason to listen to his wife, back her up, and actually do something about their newly adopted “daughter.” But nah, he just brushes it all off, calls her paranoid, acts like she’s the problem, and sends her to a shrink.
Without spoiling too much, and because he’s so blissfully ignorant, he totally pays the price. Deservedly so, if you ask me.
Anyway, what are some other dumb characters in non-comedy movies?