“Outer Banks” stars Jonathan Daviss and Carlacia Grant sit down with “Extra’s” Terri Seymour to talk all things Season 4. They tease that the stakes are raised with the new treasure hunt, which is the most dangerous they’ve ever embarked on. Carlacia also gives a hint of what’s in store for Cleo and Pope’s relationship as they find themselves working though some “extreme circumstances” and learning to lean on each other. “Outer Banks” Season 4, part 1 is streaming October 10 on Netflix.