Without revealing much of the plot of the upcoming Fantastic Beasts sequel, Jude Law has elaborated on Dumbledore and Grindelwald's relationship, calling it "incredibly intense".

The cast of The Crimes of Grindelwald, Eddie Redmayne, Law, Katherine Waterston, Alison Sudol, Dan Fogler, Ezra Miller, Zoe Kravitz, Claudia Kim, and Callum Turner, were at the San Diego Comic-Con to appear on a panel and drop the new trailer.

"There's only so much I can reveal. But it's no secret that there was an incredibly intense relationship shared by these two in the past," Law told Entertainment Weekly.

The actor added that Grindelwald, who appears in the Mirror of Erised when Dumbledore looks into it in the new trailer, "sits very much at the center of Dumbledore's his desires, but also the darkest parts of himself. And in a way, I think that's what Grindelwald perhaps symbolises for everyone. He's temptation. He kind of empowers you but he also, I suppose, opens up the worst parts of you." 

"Whenever Jude talks, the rest of us go, Mmmmmmmm," Waterston said.

Fantastic Beasts: The Crimes of Grindelwald hits theatres November 16.