The ambitious Begoña Montes is locked in a toxic marriage to a magnate in the thrilling telenovela period drama “Dreams of Freedom” (“Sueños de Libertad”), produced for Antena 3 by Banijay’s Diagonal TV alongside Atresmedia – who produced groundbreaking shows “Money Heist” and “Velvet.” “Our relationship with Diagonal is, and will continue to be, very good. …