Flashback

Authors use flashbacks to fill in missing information for the reader.  This helps the reader understand the action, or the plot of the story.  In the passage below, The Happy Medium shows the children how The Black Thing can be overcome.  The author uses flashback in this passage.

The darkness seemed to seethe and writhe, Was this meant to comfort them?

Suddenly there was a great burst of light through the Darkness.  The light spread out and where it touched the Darkness the Darkness disappeared. The light spread until the patch of Dark Thing had vanished, and there was only a gentle shining, and through the shining came the stars, clear and pure.  Then, slowly, the shining dwindled until it, too, was gone, and there was nothing but stars and starlight. No shadows. No fear. Only the stars and the clear darkness of space, quite different from the fearful darkness of the Thing.

(Chapter 6, page 91-92)

 

swirling white stars against the darkness of space
Discovery Education 2010