Amazon MGM has signed a first-look deal with Mercedes Ron , doubling down on an already hugely successful partnership with the bestselling author behind some of the biggest global hits on Prime Video . A Wattpad breakout, Ron is the writer of the “Culpables” trilogy of YA romantic fiction books, the Spanish-language movie adaptations of which have been watched by more than 100 million viewers worldwide. The franchise was soon adapted into English with “My Fault: London” and “Your Fault: London”