She previously appeared in television series such asLa JauriaandEl Reino.
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Waits reteams with McDonagh and Rockwell following their collaboration onSeven Psychopaths.
Salas is an Argentine actress known for her versatile performances in film and television.
From left: Mariana di Girolamo, Tom Waits, Ailín Salas, And Paola GianniniTomas Reid/Getty Images/Diego Lapiz/Courtesy
Its a thrill to be collaborating again with Searchlight Pictures and Blueprint Pictures for Martin McDonaghsWild Horse Nine.
The projects logline is currently under wraps.
EPs for Film4 are Ollie Madden and Farhana Bhula.
