The tone of the book changes as the characters approach Baskerville Hall. Describe the change and find a passage that represents the attitude that the characters have toward Baskerville Hall.

The change in the mood of the characters immediately follows Perkin's revelation that the Nottinghill murderer (Seldon) has escaped Princetown Prison and was believed to be hiding in the moors. The setting becomes desolate and ominous, with a cold that sends shivers down the spines of those traveling. The mood becomes dark and mysterious.