Brianne Ashleigh Tju is an American actress. She is known for her roles as Riley Marra in the MTV series Scream, Alex Portnoy in the Hulu series Light as a Feather, Alexa in 47 Meters Down: Uncaged, and Margot in I Know What You Did Last Summer.
In a small town in Massachusetts, a group of friends, fascinated by the internet lore of the Slender Man, attempt to prove that he doesn't actually exist - until one of them mysteriously goes missing.
