Walter Neff is a fictional character from the classic film noir movie, Double Indemnity, released in 1944. He is portrayed as an insurance salesman who becomes embroiled in a deadly scheme involving murder and betrayal. Neff's character is known for his cunning and charm, which he uses to manipulate those around him. In the film, Neff partners with Phyllis Dietrichson, a femme fatale, to execute a plan to kill her husband and collect the insurance money. As the story unfolds, Neff's moral dilemmas and the consequences of his actions lead to a gripping narrative that explores themes of greed and deception.