You need a bit of patience, and some sentimentality, to get thru this film. It's well worth the effort.
Roger Ebert rated it 3.5/4 stars, and for good reason. It's well-scripted, a good retelling of the Harlan Coben novel, and it has thrills, chills and spills. Plus, it's charming.
But, as Roger said, you have to meet it halfway-
``"Tell No One" will play as a terrific thriller for you, if you meet it halfway. You have to be willing to believe. There will be times you think it's too perplexing, when you're sure you're witnessing loose ends. It has been devised that way, and the director knows what he's doing. Even when it's baffling, it's never boring. I've heard of airtight plots. This one is not merely airtight, but hermetically sealed.''
It's rare when a police procedural is this good without exploding cars and machine guns everywhere. The French impart some subtlety to their cinema. The villains are plausible, not the comic book caricatures painted in U.S. cinema.