Screenplay inspiration

This was the inspiration for my opening sequence, i liked the idea of it starting in a situation which forces the audience to ask questions and then reversing to show more of the situation, so i wanted our main character to start dead then reverse through what happened to him but without revealing the killer so there is still questions to be asked. for example in the opening to american beauty the voice over says that he is dead but does not reveal who has killed him until the end of the movie.