Exclusive: Abby Lee Miller's Cancer Crisis; Mental Health Days for Kids; Hidden Germy Spot in Your Home!

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.

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

The eight-episode fast-paced, nostalgia-fueled series will take viewers on a thrilling ride through America's past.