This year’s G7 summit took place in June at Fasano, Italy, and by all accounts – or at least the post-event press releases – it was another friendly and fruitful meeting of the minds among the leaders of the world’s wealthiest democracies. The new film “Rumours” imagines a different take on the annual event: at a remote estate in Germany, the seven “leaders of the free world” convene but are soon abandoned by their entourages and waitstaff after an unknown calamity occurs.