When Grace's brother John (Catholic Priest) arrives in Tulsa to confront Father Murphy, he pulls up to the curb in front of Murphy's house with Grace's distinctive Porsche is parked on the other side of the street (with Grace in the car). But when John returns to his car, he neither sees the Porsche nor Grace either when he initially showed up nor upon his return. This is an obvious oversight, as Grace's Porsche is used as a feature when other siblings are looking for her (like the when the fire truck brother pulls Grace over in an earlier episode).