Elsa Keslassy International CorrespondentMGM International TV Productions is partnering with Make It Happen Studio (“No Second Chance”) and pubcaster France Televisions for “The Reunion,” a high-profile English-language series adapted from Guillaume Musso’s bestselling novel “La Jeune Fille et la Nuit.”“The Reunion” is written by Marston Bloom (“Selection Day,” “Marcella”) and based on Musso’s novel, which revolves around a glamorous high school girl who went missing 25 years ago in the French