A woman named Ghoson, sitting in front of a dark gray backdrop, begins to cry. Behind the film set, where she agreed to tell her story, awaits the refugee camp in Leros, Greece, that she is squatting in, biding her time until she will try to make her way further into Europe. [...] These visceral snippets of suffering and heartache are some of the stories chronicled in “Refuge,” a documentary film released Wednesday by production company Magna Carta.