Harry and Ron's Polyjuice Potion Wears Off and They Escape the Slytherin Common Room

As the effects of the Polyjuice Potion begin to wear off, Harry and Ron quickly flee the Slytherin common room to avoid being discovered. They make their way back to Moaning Myrtle's bathroom, where they find Hermione, who has accidentally turned herself part-cat after using a hair from Millicent Bulstrode's cat in her potion.