Actors, directors, producers, costume designers and special effects wizards — those are the people who typically garner most of the headlines in the film industry. This documentary looks at the relatively unsung role that casting directors (most notably, Marion Dougherty) have played in the last half century in bringing actors who don’t fit the typical Hollywood mold like James Dean, Dustin Hoffman and Bette Midler to public prominence.

Casting By¬†screens tonight at the RPL Theatre at 9 p.m. Here’s the trailer: