Episode 4

From tunnels to towers, artillery sites, resistance nests and communication centers, Nazi Germany left their footprint throughout the world. To this day, silent remains still exist, sentinels guarding clues about plots that Hitler was unable to carry out. Secret Nazi Ruins digs up mysteries from some of the most covert projects as experts dissect and reveal the purpose of these structures, their makeup, and technical design.

Chief of War follows the epic and unprecedented telling of the unification and colonization of Hawaii from an indigenous point of view.

On Last Week Tonight with John Oliver, John Oliver presents a satirical look at the week in news, politics and current events.

Resident Alien is a dark, twisted and comedic fish-out-of-water story that follows a crash-landed alien named Harry who, after taking on the identity of a small-town Colorado doctor, slowly begins to wrestle with the moral dilemma of his secret mission on Earth — ultimately asking the question, "Are human beings worth saving?"

Dexter Morgan awakens from a coma and sets out for New York City, determined to find Harrison and make things right. But when Miami Metro's Angel Batista arrives with questions, Dexter realizes his past is catching up to him fast.