**_The most all-around entertaining installment of the slasher series_** Mary Lou returns from the Underworld to seduce a male student at Hamilton High (likable Tim Conlon) and wreak more havoc at the school. “Prom Night III: The Last Kiss” (1990) and the previous film, "Hello Mary Lou," "Prom Night II" (1987), are the only installments in the franchise that are directly related in that they involve the malevolent spirit of Mary Lou Maloney. The original “Prom Night” (1980) is a whodunnit slasher with Jamie Lee Curtis while “Part IV” (1991) involves a crazy puritanical priest. Yet all ...