Warning! This episode contains SPOILERS for Agatha All Along episode 5Agatha All Along episode 5 features an impressive collection of exciting Easter eggs and references, including a major first for the MCU. Featuring the coven’s third trial on the Witches’ Road, this new test is all about Agatha (Kathryn Hahn) and her dark past. To that end, this new episode features some pretty cool references and even an homage to a classic horror movie.