Authors:

When the reader and one narrator know something the other narrator does not, the opportunities for suspense and plot development and the shifting of reader sympathies get really interesting.

"Teen book club: Cat Clarke interviews Sara Zarr". Interview with Cat Clarke, www.theguardian.com. October 19, 2012.
When the reader and one narrator know something the other narrator does not, the opportunities for suspense and plot development and the shifting of reader sympathies get really interesting.