The Facade (a.k.a. Tangled Web)

When Mary goes to a seminar about success, she meets a business man who wants to build a $50 million museum. She tells him that Lester is a big time contractor and sets up a meeting date. She uses Sandra's boyfriend's penthouse across the street to prove to Mr. Mortimer that she and Lester have lots of money. When Sandra's boyfriend comes home early, Mary's plan begins to fall apart. She admits what was going on to Mr. Mortimer and his wife. They understand, because Mrs. Mortimer says she, too, would do almost anything to aid in her husband's success. They end up using Lester's company for a smaller project.