Indecent Proposal is a 1993 drama directed by Adrian Lyne. It stars Robert Redford, Demi Moore, Woody Harrelson and Seymour Cassel. It is based on the novel of the same name by Jack Engelhard.

Childhood sweethearts David and Diana Murphy (Harrelson and Moore) are a married couple that travel to Las Vegas, hoping they can win enough money to finance David's fantasy real estate project. After gambling away all of their savings, they encounter billionaire John Gage (Redford). John becomes enamored with Diana and offers David one million dollars to spend a night with her. After a difficult night, David and Diana decide to accept the offer, and a contract is signed the next day. John flies Diana to a private boat, and it is assumed that their arrangement is consummated.

Although he had hoped to forget the whole incident, David grows increasingly insecure about his relationship with Diana, consumed with a fear that she remains involved with Gage. Because of this tension on their relationship, David and Diana separate. John reappears and renews his advances on Diana. Although she initially resists, Diana eventually consents to spend time with him, and a relationship develops. David, meanwhile, realizes he can't go on without the love of his life. When Diana files for divorce, David makes one final attempt to win her back.

John sees how Diana looks at David and recognizes that, even if she stayed with him, their relationship would never achieve the intensity she had with David. He gives her the impression that she is the latest in a long line of "million dollar girls". She leaves John and returns to David.