When Kent is talking to Mary at the library, her braid is alternately in front of and behind her right shoulder when the camera angle changes from her face and back to Kent's.
This show takes place in 1982. When the detectives pull up in front of the library, they are driving a 1986 Chevrolet Caprice. In 1986, they redesigned the front and rear cap for the Caprice. 1986 was the only year the Caprice emblem was molded into the front cap above the grill. Every year before and after the car had a hood ornament that sat on top.