Indie thriller “The American Side” has got some big secrets up its sleeves. The new features follows private eye Charlie Paczynski, whose life is thrown into disarray when his “raven-haired partner is caught in the crossfire of a blackmail scheme gone bad” and he takes it upon himself to “trail the prime suspect to the brink of Niagara, only to receive a cryptic warning,” all per the film’s official synopsis. Sounds standard enough, right? A little P.I. action, a little mystery, a cool location.