Photo: Warner Bros. Entertainment Inc.

The final trailer for Fantastic Beasts: Crimes of Grindelwald released yesterday, and a Harry Potter bombshell was revealed in it.

Remember Voldemort’s beloved snake, Nagini? You know, the last Horcrux to be destroyed when Neville Longbottom killed it with Godric Gryffindor’s Sword? Well, in the latest installment of Fantastic Beasts, Nagini will be getting an origin story and we now know that the snake was once a human woman.

In the trailer, Credence (Ezra Miller) calls for Nagini at a circus and actress Claudia Kim transforms into the giant snake.

J.K. Rowling revealed on Twitter that she’s been holding in that Nagini secret “only for around 20 years,” although fans questioned why the Harry Potter series never alluded to it if Rowling did indeed plan it all along.

Some found the casting of an Asian actress in this role problematic:

Fans also continue to question why Johnny Depp hasn’t been recast after accusations of domestic violence.

Meanwhile, can someone check on poor Neville after he realizes that he decapitated a human slave thinking it was a snake?

Fantastic Beasts: Crimes of Grindelwald hits theaters on November 16.