Continuity: When Kevin Bacon takes his son out of the bathtub in the beginning of the film the towel he uses touches the water but is dry in the next shot.

Continuity: When Maggie talks to Eddie Bo Smith Jr. (the Chicago cop) outside the meeting of "receivers", you can see the cop's breath when he speaks, but not Maggie's.

Other: When he is talking to his sister in-law during work on the phone, the red wire, which was connecting them so they could talk, dropped or fell out of place. Even though this happened, the conversation still continued.

Continuity: When Kevin is breaking into the window of his neighbour's house after the boy has shot himself, there is a statue of Mary that is there on the window sill, then the next shot it has fallen on the floor from the breaking window, and then the next shot it's back up again.

Plot hole: The hair that the dead girl has in her hand can't be from the guy who tried to rape her. They are too long to be his, and even if we accept that they are his, they are too curly, his hair is straight.