The cheapest way to watch the first two "Fantastic Beasts" movies is with a Peacock Premium subscription. Though Peacock has a free plan, you need the Premium option to unlock both films.

or ad-free plan ($15/month). You can also buy or rent the movie from retailers like Amazon and Vudu. "The Secrets of Dumbledore" is the direct sequel to "Fantastic Beasts: The Crimes of Grindelwald." ...