Midnight Blue (1997)

Shortly before he moves from New York to Los Angeles a banker visits his Atlanta branch. One evening he is propositioned, apparently by a high-class call girl. Their night of passion leaves him besotted but he is unable to find her again even with the help of a private investigator. In L.A. he is introduced to his boss's wife and is sure she is his lady of the night. But she insists she isn't. Meanwhile, many millions are missing from the bank.