You see, the water flows under the bridge, and the patient walks over the bridge and meets the pill on the other side.Likewise, unknown Gene Hackman was recognized as a solid actor and went on to star in many substantial roles (his next major role was inThe French Connection (1971)).As she swims laps, he pulls the trigger, and blood spurts from a bullet wound in her left shoulder.[The angle of entry would be an impossibility from the vantage point of the killer.] The water turns red as she sinks below the surface.During the playing of the credits with jazzy, upbeat music from Lalo Schifrin (of TV""sMission: Impossiblefame later in his career) ("DIRTY" in the title of the film is a muddy brown color, "HARRY" is bright yellow), a sunglasses-wearing Inspector Harry Callahan (Clint Eastwood) of the San Francisco police force (Homicide Division) investigates, by himself, the scene of the crime and the probable location of the shooter [another rooftop with a gorgeous and dramatic skyline view of the Bay Bridge, Treasure Island, Yerba Buena Island and the surrounding city].While on leave and awaiting orders, Col.Smollett""s shy and estranged grandson Cpl.William G.""Bill"" Smollett II (Robert Walker), a naval officer who was Anne""s old beau, entered into a brief but intense romance with Jane.