Will aunt Mildred go to her grave believing Cal's letters to her were lost during alligator-canoe confrontations? Is Brad wasting his dramatic reenactment talents by choosing a career in politics? Does Jessica ever manage to convince the city of New Orleans that Cal is not HER relation? And can a newly public love affair survive a prison sentence? It's Mardi Gras at New Orleans' most infamous gambling establishment as we unmask a killer and save a hapless naturalist from being his own worst enemy in season 2, episode 21 - The Perfect Foil.