The last one at the wedding

Frank Szatowski hasn't seen his daughter Maggie in years. So when she calls him out of the blue, to tell him that she's getting married and he's invited, Frank is overjoyed. Maggie is marrying into one of the richest families in the country, and Frank finds himself overwhelmed by the social circle she now moves in. But as the wedding weekend gets underway, it becomes clear to Frank that although they have spared no expense, there's something strange about Maggie's fiancé.