Continuity mistake: As they leave the bench and start walking a cyclist goes through the shot behind them. The camera then cuts to a different angle. As they continue their conversation the same cyclist rides past them again 2 seconds after going past them the first time. (00:13:24)
Continuity mistake: When Katie comes in to talk to Gracie, before leaving, the dog is resting its head in Grace's lap. In the next shot, from behind the couch, we can see the dog's head, meaning it's no longer in Grace's lap.
Continuity mistake: When Will tackles Andrew, his shirt is lifted up exposing a blue undershirt that's tucked in, which is also behind his gun. There's two shots of this, but in the next shot, right before Will punches Andrew, we don't see the undershirt.