Matty Walker is a fictional character from the 1981 film Body Heat, directed by Lawrence Kasdan. She is portrayed by actress Kathleen Turner and is known for her seductive and manipulative nature. The story revolves around her affair with a lawyer, leading to a web of deceit and crime. In the film, Matty is married to a wealthy man, which adds complexity to her relationship with the protagonist, Ned Racine, played by William Hurt. The plot explores themes of desire, betrayal, and moral ambiguity, making Matty a central figure in the narrative's tension and intrigue.