Read on: Deadline
You're going to want to watch to the end of this trailer, JK Rowling warned.
The final trailer for Harry Potter spin-off Fantastic Beasts: The Crimes Of Grindelwald features Newt Scamander, played by Eddie Redmayne, finally meeting his brother. "There's a lot in there for you guys. When you see the trailer, don't speak to each other until the end because there's a name you'll want to hear," the author said recently.
Johnny Depp's powerful Dark wizard Gellert Grindelwald…