Students are almost halfway through The Scarlet Letter and are noticing that characters are changing. Chapters 9 and 10 bring out the weakening of Rev. Dimmesdale under Chillingworth's "care," and the physical transformation of Chillingworth into a character whose appearance show his inner, growing evil obsession. Transformation and mutation are fitting themes for students to search for while reading. Hawthorne delivers these through characterization. This guide will help students organize their thoughts about this process.