What actor from "Fantastic Beasts" also co-starred in "The Stanford Prison Experiment"? 
Untitled Fantastic Beasts sequel:  The film is directed by David Yates, with a script by Rowling, and features an ensemble cast that includes Eddie Redmayne, Katherine Waterston, Dan Fogler, Alison Sudol, Ezra Miller, Johnny Depp, Jude Law, Zoë Kravitz, and Ezra Miller:  In 2015, he co-starred in the drama "The Stanford Prison Experiment" and in the comedy "Trainwreck".
Ezra Miller