At the end, when Mike and Cheryl are walking back to their cars from Jonathan's house, they have to walk behind his Porsche which is completely blocking the sidewalk to the street. When the angle changes to the view from the house, his car is pulled up and not blocking the walk.
When Maxwell finds Burke on the floor, the prescription is for Zithromax, an Antibiotic. You can't overdose on an antibiotic that quickly, if at all.
At the end, when listening to the lawyer on television say that her client was innocent she says, "Dr. and Mrs. Raymond" were arrested. She was the doctor, not him.