Sicario (2015)

An idealistic FBI agent named Kate Macer gets enlisted by a government task force led by Matt Graver and Alejandro Gillick to help combat the escalating drug trade between the US and Mexico. As she works with the task force, Kate begins to question their illegal and questionable methods. She soon discovers that their true objective is not to bring down a cartel lieutenant, but to disrupt the drug operations to draw out the elusive cartel drug lord. Kate finds herself caught in a dangerous situation as she becomes entangled in the dark and violent world of the drug war.