A maniac terrorizing San Francisco goes by the name "Scorpio," and there's only one cop unhinged enough to hunt him down: the legendarily gruff Inspector Harry Callahan. Directed by Don Siegel with Clint Eastwood in the role that made him a household name, this gritty thriller pairs raw police procedural tension with Eastwood's iconic deadpan delivery. Andrew Robinson steals scenes as the unsettling villain, while Harry Guardino rounds out the cast. A classic that defined the cop-action genre and proved Eastwood could carry a film with nothing but a .44 Magnum and a scowl.