A.D.: New Orleans After the Deluge returns with a new installment, “Diaspora.” In this chapter, Hamid & Mansell discover how dangerous the flooded store can be. Meanwhle, Leo & Michelle realize that they are down to their last few dollars. Nursing a Starbucks coffee in Houston, they try to figure out what to do next. In Tallahassee, Kevin’s parents deliver unwelcome news. And we return to Hamid’s store, where his concern for Mansell’s well-being intensifies. All this and more in “Diaspora.”

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