One to four spectators choose a design out of a choice of 16 designs. The performer either reads their minds or has their choices predicted in advance.
The method is a clever combination of known mentalism principles.
You will receive a manuscript of 7 pages explaining various routines for O'Daneven's Secret. You will also receive a printed cardboard similar to the cover image of this product. (This is the original print run Al Mann made. It is therefore an original Al Mann item.) To assemble the prop there is a bit of cutting and gluing necessary but nothing a second grader couldn't do. Of course, once you know the method and secrets behind this miracle you can quickly make up your own designs if you so desire.