In the Gray (2012)

Undercover narcotics officer Yancy is always faced with complicated decisions when it comes to his work, but the lines become blurred when other factors now come in to play. His life and work slowly intertwine and what was once the clarity he knew is now an alternate reality. As he falls for one of his targets and begins to use in order to save his cover and ultimately his life, he is also confronted with the burden of compromise in order to protect his friend and partner Silas from immediate danger.