The new film "Heaven Knows What" explores the world of young heroin addicts living on the streets of New York City.

It's a topic that's been shown profusely in movies , but this time the treatment is very different. Arielle Holmes stars in "Heaven Knows What," but she is not a professional actress -- she's a recovering addict. The script is based on her memoir. 

"Heaven Knows What" is directed by Benny and Josh Safdie, and they joined the show with more.