So, here is my understanding of the movie:
Young pediatrician Alex Beck and his wife Margot had a perfect marriage until it was destroyed when Margot was ‘murdered’ at the lake, and Alex beaten up and thrown into the water (somehow he didn’t drown, although he went into a three day coma, but we don’t learn why until later).
Eight years pass, and Alex has built his medical practice but certainly has not forgotten his wife. But’s lets move back to the beginning.
Alex and Margot have been best friends since they were little kids. Margot’s dad was a gruff police captain and her mother was a mild housewife. Alex’s dad was the stable manager for a very wealthy man (who lives in the largest house that could fit on the screen) named Neuville.
In fact, as it turns out, Margot was not murdered. She was “exiled” by her father to Madrid and told her husband had died. She was told that she had been ‘murdered’ and had to lay low because otherwise she might be remurdered. Somehow, although she seems fairly bright, she never bothers to find out (and in later years she could have googled, after all) that her beloved husband is still alive, practicing medicine under his own name in their home town of Paris. So, she thinks her husband is dead.
The first truly bad guy in the movie is the son of wealthy Neuville, who worked with Margot helping young men and women on the outskirts of society find a place in society. At the same time, young Neuville was raping the youngsters, boys and girls, both. Margot finds out and threatens to turn him in; young Neuville beats her up. She does not know what to do, but she tells her sister in law (Alex was, for some reason, in Lyon while this was going on). She tells her sister in law that she cannot tell anyone, especially Alex, what happened and that she would tell Alex there had been an auto accident. But she asks Alex’ sister to take photos, which she will put in a safe deposit box because they might be handy later.
Oh, I forgot something. After young Neuville beat her up, she was still conscious and she had sufficient presence of mind to pick up a shot gun which Alex had inherited from his father (who was killed by Neuville, although no one knows this, because he too caught young Neuville with a very young girl) and she shoot and kills young Neuville.
This makes old Neuville mad, and somehow he knows that she did it (again, I missed this nuance). At any rate, old Neuville hires two thugs to kill Margot and Alex at the lake, but Margot’s father finds out, goes to the thugs and agrees to pay them twice as much (as a police captain, he knew all the thugs, and in addition was ‘on the payroll’ of old Neuville. The thugs allow Margot to escape (into exile), but attack Alex. Margot’s father is witness to all of this and, apparently, he pulls Alex from the water (no telling what would have happened had Alex been killed).
So, the police find two bodies near the lake (they are the thugs, killed by Margot’s father). They also learn that the dead Margot was not Margot (her pictures were taken from the autopsy files, which stated her as being of a height and weight that was not Margot and being a regular heroin addict which certainly was not Margot, who was perfect in all ways. Margot’s father had been the person to identify the body, and he had rifled the autopsy file some time later and in fact had buried a dead street walker, identifying her as his daughter, after he slashed her to make her unidentifiable.
But the police think that all this was done by Alex, not by Margot’s father, so they go after him, but he is protected by Bruno and Bruno’s buddies. Bruno is the father of a patient, a young hemophiliac, and he would do anything for Dr. Alex, and does. In the meantime, somehow Margot realizes that Alex is around and begins sending him mysterious email messages, not knowing that his computer is tapped by both Neuville and the police, apparently. And Neuville decides that he needs to find and kill Margot once more, and Bruno and friends have to kill a number of people to protect Alex. (I am not going to explain any of these sidebar murders, of Margot’s best friend, for example.)
Well, there are two clever folks in this movie. For one, there is Feldman the lawyer, and for another Lefkowitz the police lieutenant, who finally figure it out, capture Neuville at a horse show (of course), and wire Alex so he can get Margot’s father to confess to most of the crimes that have ocurred in France over the past decade or so and lead him to commit suicide) and allow Alex and Margot to have an extremely tearful reunion as the sun goes down over the lake.
One more thing. There is a chace, when the police think Alex is the bad guy. He escapes from his office on foot, out-maneuvering police cars and policemen on foot, jumping over fences, hiding in trash cans, jumping from second story windows, crashing through an outdoor food market (sloppily) and even darting across the beltway, causing what looks to be a 20 car accident (cars, for this purpose include trucks and a motorcycle).
Watching the Nats lose to the Phillies and listening to Joe Lieberman would have been more fun than this movie.