Check out CHARLEY VARRICK. It's an obscure Walter Matthau movie from 1973 that influenced Tarrantino greatly. It used to be free on youtube, but got pulled.
Director: Don Siegel same as “Dirty Harry:
Charley Varrick was a great film. Tarrentino I don’t like. His output is dark and perverted, cheap thrills. But that can make you rich in Hollywood