wrinkle in time

In Chapter Five, the children look into the Happy Medium's crystal ball and see their own planet, but it is clouded by the Darkness they had seen earlier. Meg asks if it had just shown up, and Mrs. Whatsit tells her that it has actually been there for a long time. This explains why Planet Earth is so deeply troubled. They tell her that this Dark Thing is Evil, the “Power of Darkness,” but that their planet had been instrumental in fighting the Darkness through time.

In Chapter Six, the Happy Medium implores the children to look into her crystal ball again, and this time they again see the Dark Thing, but also a bright light that touched the darkness. When it touched the darkness, the light disappeared, and the Medium assures them that “it can be overcome.”