A new adaptation of writer Denis Diderot's 18th-century novel "The Nun" is making its debut at the Berlin film festival, featuring French star Isabelle Huppert as a convent's mother superior.

A new adaptation of writer Denis Diderot's 18th-century novel "The Nun" is making its debut at the Berlin Film Festival, featuring French star Isabelle Huppert as a convent's mother superior.