Like the Rebecca De Mornay character, Franks Sinatra's wife Zosh (Eleanor Parker) exhibits Munchausen's after suffering injuries in a car crash caused by her husband, which she uses to gain sympathy and manipulate.
The victim's name is Vicki Riggs, Martin Riggs' deceased wife. Also the cops that discover the dead body call in as 3 William 56, the call sign that belongs to Sgt. Murtaugh when he calls in.