Things Not Seen is a first-person novel written by Andrew Clements and his third novel after Frindle and The Landry News. The title is apparently taken from Hebrews 11:1, "Now faith is the substance of things hoped for, the evidence of things not seen" in the King James Version of the Bible. The book was originally released in 2002 by Philomel Books, an imprint of Penguin Group, but was re-released in 2006 as a platinum edition by Puffin. The platinum edition includes a short interview with Andrew Clements and a redesigned cover. This book was followed by two sequels, Things Hoped For and Things That Are. Source: Wikipedia (en)