The Trio Enters the Passage Leading to the Shrieking Shack

After Crookshanks immobilizes the Whomping Willow, Harry and Hermione enter the secret passage under the tree. They follow the tunnel, guided by Crookshanks, and realize that it likely leads to the Shrieking Shack. As they hurry through, they are fearful for Ron's safety, wondering what the black dog might do to him.