The Killer is a 1989 Hong Kong action thriller film written and directed by John Woo. The film stars Chow Yun-fat, Danny Lee and Sally Yeh. Chow plays assassin Ah Jong, who accidentally damages the eyes of singer Jennie (Yeh) during a shootout. He later discovers that if Jennie does not undergo an expensive operation, she will go blind. To get the money for Jennie, Ah Jong decides to perform one last hit.

Plot

Ah Jong, a hitman, decides to retire after one final job. During a shootout with gangsters, he accidentally blinds a young nightclub singer named Jennie when his gun fires too close to her eyes. Over the next six months, he quietly watches over her, attending all of her performances. One night, he intervenes to save her from being mugged and assaulted; Jennie then invites him into her apartment. They grow close and begin a relationship. However, Jennie then learns from her doctor that if she does not undergo a corneal transplant, she will lose what remains of her sight. Ah Jong agrees to kill a high-ranking triad boss to pay for the operation.