Although the trailers and almost every review gives away one of the key twists, I will not. Suffice it to say that you should expect the unexpected. In a mark of confident writers, they are even willing to set up blind alleys just to keep you on your toes. Next month he's doing the underwear billboard in Times Square. This is another beauty of the script.
Thrillers require carefully applied humor to relieve some of the tension.
One gorgeous day, the Mullen family goes to Central Park for a science fair. Since he is about ten, his parents do not watch him every second. As his camera goes up, he is kidnapped. As they do throughout the film, the acting of panic and fear by Gibson and Russo is genuine and touching. They earn and keep the audience's empathy.