Hello I need atitle of an early 80s british who done it. At first I thought david wagner was an actor in it. But his bio doesn't have it listed. Its about two brothers one is in a wheelchair both wealthy. There's a woman's dead body in the trunk of one of the brothers cars.the entire movie takes place at the handicapped brothers house. I recall a violent fight at the end of the movie between the two brothers. One of the brothers uses a crossbow to shoot the other. The viewer has no idea which brother killed the woman till the movies almost over. I rented on vhs around 1987 or 88 from a little no name video store. Thank you