book
I read this book about a year ago. I never knew there was a French movie based on it until I randomly searched the author (Harlan Coben) on youtube last night after I finished reading a new book he wrote.
So I found the movie on netflix and watched it. It was okay, but I highly recommend reading the book! The movie left out important facts and details, like movies usually do. Since I read the book, it was hard for me to really like the movie because it just doesn't compare to the book.