Corrected entry: The Latina women can't speak a word of English when her son is obviously hurt, yet later in the film speaks relatively good English.
Corrected entry: At the beginning of the movie when they are driving down the road Denzel picks up a CB mike and talks into it. Yet when they get to the school you cannot see any CB antennas on the truck.
Corrected entry: At the end of the film, during John Q's trial, his son is sitting in the courtroom with his mother. He is not wearing a mask. Working in hospitals, I know for a fact that anyone who has had a transplant of any kind will always wear a face mask in public.
Corrected entry: In the scene where the woman who was in the car crash is brought to a hospital, and doctors are checking her organs, when the doctor starts drilling into her, blood splatters all over the cloth covering his mouth. However, he is not wearing protective glasses and if the woman had had a transmittable disease and some blood had hit his eye, he could have been infected.
Corrected entry: When John Q. is going to sacrifice his life to save his son, he pulls the trigger on his pistol which is pointed to his head. The pistol goes "click" and he says he has the safety on. Pistols don't make any sound when the safety is on.
Corrected entry: In the scene where John Q is sitting at the kitchen table, you can see he is playing with his ring. In the next scene, when he goes to sell the ring, you can see that its his wife's ring, not his.
Corrected entry: When John and his wife are selling everything to save their son, John sells his wife's wedding ring. Toward the end of the film, John's wife hugs him and you can see her wedding ring on her finger.
Corrected entry: In the scene where John Q and his wife are sitting across the table from the doctor and administrator (just the two of them) and learning of the need for a transplant, there is one shot from the right in which a third person is seen sitting with the doctor and administrator.