Sound of My Voice (2012)

In SOUND OF MY VOICE, Peter (Denham) and Lorna (Vicius), a young Los Angeles couple, infiltrate the underworld of a cult led by an enigmatic young woman named Maggie (Marling). Intent on exposing her as a charlatan and freeing the group members from her spell, Peter and Lorna start to question their objective as they unravel the mysteries of Maggie's past.