AllMovie

A woman researcher who specializes in Native American antiquities is attacked and killed at the museum where she works. The museum is located on federal land so the FBI is called in. Don's investigation reveals that the woman was working late at night on a secret project that involved the carbon dating of an object. Back at home, Don and Charlie become worried about their dad after they learn that he is still holding on to his late wife's clothes, which he supposedly gave away months ago.