New York has always been a magnet for black sheep, a makeshift family for people who don't have family of their own. In Sangre de Mi Sangre, that city comes under a microscope. Pedro steals into NYC from Mexico to find his long-lost father, but is robbed of his identity by fellow émigré Pedro and then exploited by Spanish-speaking hustler Magda, until he cobbles together the support he needs in the city's streets. Almost perfectly lit, and blessed with a cast so naturalistic that you forget they're acting, this Spanish-language feature is arguably the most substantive winner of Sundance's Grand Jury prize in a long while.