The Equalizer (2014)

A man believes he has put his mysterious past behind him and has dedicated himself to beginning a new, quiet life. But when he meets a young girl under the control of ultra-violent Russian gangsters, he can't stand idly by - he has to help her.

 Director: Antoine Fuqua.
 Writers: Richard Wenk, Michael Sloan  (television series),
 1 more credit.

 Stars: Denzel Washington, Marton Csokas,  Chloë Grace Moretz.

Storyline

In The Equalizer, Denzel Washington plays McCall, a man who believes he has put his mysterious past behind him and dedicated himself to beginning a new, quiet life. But when McCall meets Teri (Chloë Grace Moretz), a young girl under the control of ultra-violent Russian gangsters, he can't stand idly by - he has to help her. Armed with hidden skills that allow him to serve vengeance against anyone who would brutalize the helpless, McCall comes out of his self-imposed retirement and finds his desire for justice reawakened. If someone has a problem, if the odds are stacked against them, if they have nowhere else to turn, McCall will help. He is The Equalizer.