Sudden Impact is a 1983 American vigilante action thriller film, the fourth in the Dirty Harry series, directed, produced by and starring Clint Eastwood (making it the only Dirty Harry film to be directed by Eastwood himself) and co-starring Sondra Locke. The film tells the story of a gang rape victim (Locke) who decides to seek revenge on the rapists ten years after the attack by killing them one by one. Inspector Callahan (Eastwood), famous for his unconventional and often brutal crime-fighting tactics, is tasked with tracking down the serial killer. The film is notable for the catchphrase "Go ahead, make my day", written by John Milius and uttered by Clint Eastwood's gun-wielding character in the beginning of the film as he stares down an armed robber who is holding a hostage. Plot In 1973, artist Jennifer Spencer and her sister, Beth, are gang-raped. The attack leaves Beth in a catatonic state. Ten years later, an enraged Spencer seeks revenge and kills George Wilburn, one of the rapists. She then moves to the town of San Paulo, looking for the remaining criminals. Meanwhile, Inspector Harry Callahan is frustrated when a judge yet again dismisses a case due to his lawless methods. At his favorite diner, he foils a robbery, killing three criminals in the process. Callahan later causes powerful crime lord Threlkis to suffer a fatal heart attack, after threatening him with prosecution in a murder case. Unable to fire him because his methods "get results", Callahan's superiors instead order him to take a vacation. However, his relaxation is short-lived when four of Threlkis's hitmen attack him. Callahan gets to dispatch three, while the fourth one escapes. Later, the suspect from the dismissed case and his friends throw Molotov cocktails into his car. Acting in self-defense, he manages to cause his attackers to crash their car and die. Callahan's supervisor, Lieutenant Donnelly, immediately sends him to San Paulo to investigate the Wilburn murder. Upon arriving in San Paulo, Callahan chases down a robber. The reckless but successful pursuit draws the anger of the local police. While jogging with his bulldog Meathead, Callahan accidentally runs into Spencer. While being less than thrilled, she feels no anger toward Callahan. Upon returning to his room at a motel, he is targeted by the surviving Threlkis hitman, who fails and gets killed by the inspector. Meanwhile, Spencer kills a second rapist, Kruger, at the