Elsa Keslassy International CorrespondentRobert Lantos’ Serendipity Point Films (“Crimes Of The Future”) and Beta Film (“Gomorrah,” “Babylon Berlin”) are joining forces on “Rise of the Raven” (working title), a big-budget epic drama series about Janos Hunyadi, a fearless warrior who defeated the vast Ottoman army and defended Europe in 1456 at the Battle of Belgrade.