Paulina Gaitan as Sayra and Edgar Flores as Willy/El Casper in "Sin Nombre."

A scene from "Sin Nombre."

Paulina Gaitan as Sayra in "Sin Nombre."

Paulina Gaitan as Sayra and Guillermo Villegas in "Sin Nombre."

Director-writer Cary Joji Fukunaga on the set of "Sin Nombre."

Edgar Flores in "Sin Nombre."

Paulina Gaitan in "Sin Nombre."

Paulina Gaitan and Edgar Flores in "Sin Nombre."

Paulina Gaitan in "Sin Nombre."

Luis Fernando Pena in "Sin Nombre."

Writer/director Cary Joji Fukunaga and Paulina Gaitan on the set of "Sin Nombre."

Writer/director Cary Joji Fukunaga on the set of "Sin Nombre."

Edgar Flores, Kristyan Ferrer and Tenoch Huerta Mejia in "Sin Nombre."

Writer/director Cary Joji Fukunaga on the set of "Sin Nombre."

Edgar Flores in "Sin Nombre."

Diana Garcia and Edgar Flores in "Sin Nombre."

Paulina Gaitan and Edgar Flores in "Sin Nombre."

Paulina Gaitan in "Sin Nombre."

Guillermo Villegas and Paulina Gaitan in "Sin Nombre."

Edgar Flores in "Sin Nombre."

Kristyan Ferrer and Edgar Flores in "Sin Nombre."

Guillermo Villegas, Paulina Gaitan and Gerardo Taracena in "Sin Nombre."

Paulina Gaitan in "Sin Nombre."

Poster art for "Sin Nombre."