Guilty Hearts (2002)

Quiet and unassuming church organist Jenny Moran is depressed with her marriage to working-class Matt and leaves him. Jenny begins an affair with the manipulative and charming Dr. Stephen Carrow, who is also deacon of her church and a married man. Someone kills Carrow's wife after she learns of the affair between Jenny and her husband. The murderer is caught and confesses, but that confession leads to new lies which tear apart Jenny Moran's life.