Shades of Love: Sincerely, Violet (1987)

Elizabeth is a historian who believes that she is on to the find of her career, but has difficulty getting access to the document that will prove her theory. In desperation, she and a friend decide to break into the owner's house. She successfully gets in but is unexpectedly caught by the owner. She and the friend have to make up a story to get them out of trouble which eventually leads to string of events that lands Elizabeth in even more hot water.