Casque

Each of the twelve puzzles in The Secret are intended to lead the seeker to the location of what Byron Priess called a casque, an unfired clay box designed by JoEllen Trilling and containing a clay key. Preiss’ use of “casque” is somewhat unusual, as the term is usually used to refer to a metal helmet of the sort worn by conquistadors.

Each casque is uniquely decorated, in three fashions. The inside lid displays a specific time reading on a clock face, a single figure on the exterior is colored, and each key contained therein is painted a different color. These customizations make it possible to for genuine casques to be differentiated from hoaxes.