It's time to break out the cardigans and hot lattes - fall is officially about to begin next week. Watch With Us is celebrating early with three underrated Prime Video movies that are great to watch as the autumn season begins. English author Agatha Christie wrote many classic murder mysteries, and one of her best was Murder on the Orient Express, which was adapted for the big screen by Kenneth Branagh in 2017. The First Omen has plenty of murder, too, but they're engineered by malevolent supernatural forces that want to take over the world.