Sicilian Husband, Blackmailed Bride

Today is Amber's wedding, and she's having a grand ceremony in a rural English church. Her groom is the eldest son of a wealthy and aristocratic family. But the moment Amber is about to swear her vows,  a strong male voice breaks the tranquility. "I object to this union!" When Amber turns around, she sees the unforgettable Guido. Amber "married" Guido one year previously in Las Vegas. But why is he here now? That marriage wasn't even real!