David Griffin

David Allen Griffin is the main antagonist in the 2000 film The Watcher.

He is portrayed by Keanu Reeves.

Biography
Griffin is a serial killer who only targets young women who do not have any close relatives or friends and therefore won't be missed, and he kills them by strangling them with a piano wire. FBI Special Agent Joel Campbell hunted Griffin down in Los Angeles, but after failing to capture him and bring him to justice, Campbell retired and now lives a very lonely life in Chicago.

Campbell discovers that a young woman was recently murdered in his apartment building, and Campbell then finds a photograph of the woman in his mail that was sent to him three days before the murder took place. Campbell speaks to the detectives on the case and deduces that the killer is David Griffin and that he has also moved to Chicago. Meanwhile, Griffin makes conversation with a young woman working at a camera store and takes several photographs of her before leaving. Later on, he phones Campbell at his apartment and tells him that he followed Campbell to Chicago in order to rebuild the "rapport" they once had. Griffin also reveals that he will send a photograph to Campbell of his next intended victim (the woman at the camera store), and Campbell has until 9:00pm the following evening to find her.