Flo Lieb’s review published on Letterboxd:
Quite honestly...I thought this would be worse. Way worse. "The Girl with the Dragon Tattoo" kind of worse. It's better. Not good. Not anywhere near good. But it's progress. After "Dragon Tattoo" this is probably the bottom line of this film: David Fincher gets better and better at adapting cheap novelettes you divulge on transatlantic airline flights.
As in the other flick, a blonde goes missing. And light spoilers ahead: the resolution is the same, too. Everything is directed, lighted, boom microphoned neatly – yadda yadda yadda. The story, though, not so much. Why the characters do what they do hardly makes sense – even considering pulp literature standards. It's a groan-worthy ending that should leave every character facepalming.
Still, it has it's funny moments, usually when Mr. Affleck's character is basically standing in for the actor himself and his troublesome relationship with the media and the public opinion throughout his post-"Bennifer" years. Which keeps the film from becoming a drag and earning it the status: "watchable".
And that, unfortunately, is what Mr. Fincher's career by now has boiled down to: turning cheap novelettes into "watchable" movies.
Whatever pays the bill, I guess.