Some of the story elements in The East seem similar to those on The Sound of My Voice, the first feature co-written and directed by Zal Batmanglij and co-written by and starring Brit Marling.
For sure, both detail what happens when undercover agents get in over their head.
Sound of My Voice was about a cult, while in The East, we're dealing with a group of radical subversives – something like The Edukators or Fight Club's Project Mayhem, perhaps.
This first trailer does make it seem like edge of your seat stuff. The cast is cracking too – Marling, Ellen Page, Toby Kebbell, Patricia Clarkson.