Walter Finch

Walter Finch is the main antagonist of Christopher Nolan's 2002 film Insomnia. He was portrayed by Robin Williams.

Description
Walter Finch was an author of a series of crime novels. After a fan came to visit him, he was annoyed by her laughing, and slaps her to try to get her to stop. She screams, and eventually, Walter grew scared, and then beat her to death. To hide evidence of her murder, he clips her nails, cleans the wounds, then he throws the body in a dump.